{
 "total": 2000,
 "page": 1,
 "pagesize": 200,
 "questions": [
	 
{
 "tags": [],
 "question_id":86200,
 "title": "Start",
 "body": "<p>Welcome to the STEP database website</p><p><img src=\"/database/logo.jpg\" alt=\"logo\" width=\"128\"></p><p>To find a question, or a year, or a topic, simply type a keyword in the search box, e.g. </p><p> <code> 88 (year) S2 (STEP II) Q2 (Question 2) </code> </p> or <p><code> Pure (Mech or Stats) Coordinate geometry  </code></p><p>Each question entry has access to the pdf and the tex source files (the program these papers are typesetted) for that paper, i.e.<p><img src=\"/database/pdf.png\" alt=\"pdf\" width=\"42\"><img src=\"/database/latex.png\" alt=\"tex\" width=\"42\"></p></p><hr></p><p> 1404 questions from 1987-2018 (including 1986 Specimen)</p><p>"
},
{
 "tags": ["Inequalities,","Binomial coefficient"],
 "question_id":86101,
 "title": "Spec-S1-Q1",
 "body": "Quadratic functions, partial fractions, coefficient of binomial expansion. <p><img src=\"/database/db/Spec/Spec-S1-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP I Specimen Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/Spec/Spec-S1.pdf\"></a><a  class=\"linktex\" href=\"/database/db/Spec/Spec-S1.tex\"></a></p> "
},
{
 "tags": ["Euclidean geometry"],
 "question_id":86102,
 "title": "Spec-S1-Q2",
 "body": "Lines, right angle, differentiation, maximum value, optimisation, trigonometry. C1 <p><img src=\"/database/db/Spec/Spec-S1-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP I Specimen Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/Spec/Spec-S1.pdf\"></a><a  class=\"linktex\" href=\"/database/db/Spec/Spec-S1.tex\"></a></p> "
},
{
 "tags": ["Differential equation"],
 "question_id":86103,
 "title": "Spec-S1-Q3",
 "body": "Substitution, initial condition, forced second order equation. <p><img src=\"/database/db/Spec/Spec-S1-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP I Specimen Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/Spec/Spec-S1.pdf\"></a><a  class=\"linktex\" href=\"/database/db/Spec/Spec-S1.tex\"></a></p> "
},
{
 "tags": ["Integration by substitution"],
 "question_id":86104,
 "title": "Spec-S1-Q4",
 "body": "Trigonometry, trigonometric, integral, arctan. <p><img src=\"/database/db/Spec/Spec-S1-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP I Specimen Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/Spec/Spec-S1.pdf\"></a><a  class=\"linktex\" href=\"/database/db/Spec/Spec-S1.tex\"></a></p> "
},
{
 "tags": ["Numbers"],
 "question_id":86105,
 "title": "Spec-S1-Q5",
 "body": "Positive integers, digits in base 10, zeros, factorial. C1 <p><img src=\"/database/db/Spec/Spec-S1-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP I Specimen Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/Spec/Spec-S1.pdf\"></a><a  class=\"linktex\" href=\"/database/db/Spec/Spec-S1.tex\"></a></p> "
},
{
 "tags": ["Euclidean geometry"],
 "question_id":86106,
 "title": "Spec-S1-Q6",
 "body": "50p (fifty pence) coin, arc, cross section, diametrically opposite, radius, circle, area. C1 <p><img src=\"/database/db/Spec/Spec-S1-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP I Specimen Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/Spec/Spec-S1.pdf\"></a><a  class=\"linktex\" href=\"/database/db/Spec/Spec-S1.tex\"></a></p> "
},
{
 "tags": ["Complex Numbers"],
 "question_id":86107,
 "title": "Spec-S1-Q7",
 "body": "Modulus and argument, complex exponential, de Moivre's theorem, sum of complex series. <p><img src=\"/database/db/Spec/Spec-S1-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP I Specimen Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/Spec/Spec-S1.pdf\"></a><a  class=\"linktex\" href=\"/database/db/Spec/Spec-S1.tex\"></a></p> "
},
{
 "tags": ["Coordinate geometry"],
 "question_id":86108,
 "title": "Spec-S1-Q8",
 "body": "Fixed point, curve, rectangle, vertices, area, arc, parabola, integration, finding area. <p><img src=\"/database/db/Spec/Spec-S1-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP I Specimen Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/Spec/Spec-S1.pdf\"></a><a  class=\"linktex\" href=\"/database/db/Spec/Spec-S1.tex\"></a></p> "
},
{
 "tags": ["Inequality,","Integral"],
 "question_id":86109,
 "title": "Spec-S1-Q9",
 "body": "Modulus function, rational function, surds, trigonometry, trigonometric, integration. <p><img src=\"/database/db/Spec/Spec-S1-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP I Specimen Question 9 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/Spec/Spec-S1.pdf\"></a><a  class=\"linktex\" href=\"/database/db/Spec/Spec-S1.tex\"></a></p> "
},
{
 "tags": ["Work,","Power"],
 "question_id":86110,
 "title": "Spec-S1-Q10",
 "body": "Rate of work, constant force and resistance, speed, distance. <p><img src=\"/database/db/Spec/Spec-S1-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP I Specimen Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/Spec/Spec-S1.pdf\"></a><a  class=\"linktex\" href=\"/database/db/Spec/Spec-S1.tex\"></a></p> "
},
{
 "tags": ["Friction"],
 "question_id":86111,
 "title": "Spec-S1-Q11",
 "body": "Limiting friction, uniform cylinder, coefficient of friction, inclined plane ramp, constant force. <p><img src=\"/database/db/Spec/Spec-S1-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP I Specimen Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/Spec/Spec-S1.pdf\"></a><a  class=\"linktex\" href=\"/database/db/Spec/Spec-S1.tex\"></a></p> "
},
{
 "tags": ["Collision"],
 "question_id":86112,
 "title": "Spec-S1-Q12",
 "body": "Uniform disc, coefficient of friction and restitution. <p><img src=\"/database/db/Spec/Spec-S1-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP I Specimen Question 12 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/Spec/Spec-S1.pdf\"></a><a  class=\"linktex\" href=\"/database/db/Spec/Spec-S1.tex\"></a></p> "
},
{
 "tags": ["Circular Motion"],
 "question_id":86113,
 "title": "Spec-S1-Q13",
 "body": "String, angular speed, horizontal circle, vertical plane motion. <p><img src=\"/database/db/Spec/Spec-S1-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP I Specimen Question 13 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/Spec/Spec-S1.pdf\"></a><a  class=\"linktex\" href=\"/database/db/Spec/Spec-S1.tex\"></a></p> "
},
{
 "tags": ["Discrete random variable,"],
 "question_id":86114,
 "title": "Spec-S1-Q14",
 "body": "Unbiased four-faced dice, expectation.  <p><img src=\"/database/db/Spec/Spec-S1-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP I Specimen Question 14 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/Spec/Spec-S1.pdf\"></a><a  class=\"linktex\" href=\"/database/db/Spec/Spec-S1.tex\"></a></p> "
},
{
 "tags": ["Discrete random variable"],
 "question_id":86115,
 "title": "Spec-S1-Q15",
 "body": "Expectation and variance, integer values. <p><img src=\"/database/db/Spec/Spec-S1-Q15.png\" alt=\"q\" width=\"720\"></p><b>[STEP I Specimen Question 15 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/Spec/Spec-S1.pdf\"></a><a  class=\"linktex\" href=\"/database/db/Spec/Spec-S1.tex\"></a></p> "
},
{
 "tags": ["Probability density function"],
 "question_id":86116,
 "title": "Spec-S1-Q16",
 "body": "Pdf, cumulative distribution function (cdf), expectation, continuous random variable. <p><img src=\"/database/db/Spec/Spec-S1-Q16.png\" alt=\"q\" width=\"720\"></p><b>[STEP I Specimen Question 16 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/Spec/Spec-S1.pdf\"></a><a  class=\"linktex\" href=\"/database/db/Spec/Spec-S1.tex\"></a></p> "
},
{
 "tags": ["Rational Functions"],
 "question_id":86201,
 "title": "Spec-S2-Q1",
 "body": "Algebra, partial fractions, positive integers. <p><img src=\"/database/db/Spec/Spec-S2-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP II Specimen Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/Spec/Spec-S2.pdf\"></a><a  class=\"linktex\" href=\"/database/db/Spec/Spec-S2.tex\"></a></p> "
},
{
 "tags": ["Simultaneous equations"],
 "question_id":86202,
 "title": "Spec-S2-Q2",
 "body": "Algebra, discriminant, system of equations, three unknowns. <p><img src=\"/database/db/Spec/Spec-S2-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP II Specimen Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/Spec/Spec-S2.pdf\"></a><a  class=\"linktex\" href=\"/database/db/Spec/Spec-S2.tex\"></a></p> "
},
{
 "tags": ["Complex numbers"],
 "question_id":86203,
 "title": "Spec-S2-Q3",
 "body": "de Moivre's theorem, system and simultaneous equations, trigonometry. <p><img src=\"/database/db/Spec/Spec-S2-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP II Specimen Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/Spec/Spec-S2.pdf\"></a><a  class=\"linktex\" href=\"/database/db/Spec/Spec-S2.tex\"></a></p> "
},
{
 "tags": ["Curve sketching"],
 "question_id":86204,
 "title": "Spec-S2-Q4",
 "body": "Trigonometry, hyperbolic function, inverse functions, principal value, function. <p><img src=\"/database/db/Spec/Spec-S2-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP II Specimen Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/Spec/Spec-S2.pdf\"></a><a  class=\"linktex\" href=\"/database/db/Spec/Spec-S2.tex\"></a></p> "
},
{
 "tags": ["Analysis"],
 "question_id":86205,
 "title": "Spec-S2-Q5",
 "body": "Approximating integrals with sums, bounds, error. <p><img src=\"/database/db/Spec/Spec-S2-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP II Specimen Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/Spec/Spec-S2.pdf\"></a><a  class=\"linktex\" href=\"/database/db/Spec/Spec-S2.tex\"></a></p> "
},
{
 "tags": ["Functional equation"],
 "question_id":86206,
 "title": "Spec-S2-Q6",
 "body": "Trigonometry, exponential, logarithm, sine, cosine, differentiation, identity.  <p><img src=\"/database/db/Spec/Spec-S2-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP II Specimen Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/Spec/Spec-S2.pdf\"></a><a  class=\"linktex\" href=\"/database/db/Spec/Spec-S2.tex\"></a></p> "
},
{
 "tags": ["Integral"],
 "question_id":86207,
 "title": "Spec-S2-Q7",
 "body": "Integer part, floor  function, curve sketching, exponential function.  <p><img src=\"/database/db/Spec/Spec-S2-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP II Specimen Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/Spec/Spec-S2.pdf\"></a><a  class=\"linktex\" href=\"/database/db/Spec/Spec-S2.tex\"></a></p> "
},
{
 "tags": ["Groups"],
 "question_id":86208,
 "title": "Spec-S2-Q8",
 "body": "Multiplication modulo N, cyclic group, order 12, isomorphism.  <p><img src=\"/database/db/Spec/Spec-S2-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP II Specimen Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/Spec/Spec-S2.pdf\"></a><a  class=\"linktex\" href=\"/database/db/Spec/Spec-S2.tex\"></a></p> "
},
{
 "tags": ["Vector geometry"],
 "question_id":86209,
 "title": "Spec-S2-Q9",
 "body": "Intersection of plane and sphere, circle.  <p><img src=\"/database/db/Spec/Spec-S2-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP II Specimen Question 9 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/Spec/Spec-S2.pdf\"></a><a  class=\"linktex\" href=\"/database/db/Spec/Spec-S2.tex\"></a></p> "
},
{
 "tags": ["Logic"],
 "question_id":86210,
 "title": "Spec-S2-Q10",
 "body": "Speaking frogs arguing with toads, truth and lies.  <p><img src=\"/database/db/Spec/Spec-S2-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP II Specimen Question 10 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/Spec/Spec-S2.pdf\"></a><a  class=\"linktex\" href=\"/database/db/Spec/Spec-S2.tex\"></a></p> "
},
{
 "tags": ["Projectile motion"],
 "question_id":86211,
 "title": "Spec-S2-Q11",
 "body": "Collision in trajectory, combined particle, coalesce.  <p><img src=\"/database/db/Spec/Spec-S2-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP II Specimen Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/Spec/Spec-S2.pdf\"></a><a  class=\"linktex\" href=\"/database/db/Spec/Spec-S2.tex\"></a></p> "
},
{
 "tags": ["Circular motion"],
 "question_id":86212,
 "title": "Spec-S2-Q12",
 "body": "Simple harmonic oscillation, period, bead on wire, string and springs, small angle approximation, inequality.  <p><img src=\"/database/db/Spec/Spec-S2-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP II Specimen Question 12 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/Spec/Spec-S2.pdf\"></a><a  class=\"linktex\" href=\"/database/db/Spec/Spec-S2.tex\"></a></p> "
},
{
 "tags": ["Moment of inertia"],
 "question_id":86213,
 "title": "Spec-S2-Q13",
 "body": "Uniform sphere, tension, chocolate orange, centre of mass of segment.  <p><img src=\"/database/db/Spec/Spec-S2-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP II Specimen Question 13 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/Spec/Spec-S2.pdf\"></a><a  class=\"linktex\" href=\"/database/db/Spec/Spec-S2.tex\"></a></p> "
},
{
 "tags": ["Circular motion,","Friction"],
 "question_id":86214,
 "title": "Spec-S2-Q14",
 "body": "Uniform disc, angular speed, constant frictional force, rate of change.  <p><img src=\"/database/db/Spec/Spec-S2-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP II Specimen Question 14 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/Spec/Spec-S2.pdf\"></a><a  class=\"linktex\" href=\"/database/db/Spec/Spec-S2.tex\"></a></p> "
},
{
 "tags": ["Mean and variances"],
 "question_id":86215,
 "title": "Spec-S2-Q15",
 "body": "King of Smorgasbrod, Kippers, mean and variances, schemes.  <p><img src=\"/database/db/Spec/Spec-S2-Q15.png\" alt=\"q\" width=\"720\"></p><b>[STEP II Specimen Question 15 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/Spec/Spec-S2.pdf\"></a><a  class=\"linktex\" href=\"/database/db/Spec/Spec-S2.tex\"></a></p> "
},
{
 "tags": ["Tree diagram"],
 "question_id":86216,
 "title": "Spec-S2-Q16",
 "body": "Tennis tournament, probability, draw, first, final round.  <p><img src=\"/database/db/Spec/Spec-S2-Q16.png\" alt=\"q\" width=\"720\"></p><b>[STEP II Specimen Question 16 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/Spec/Spec-S2.pdf\"></a><a  class=\"linktex\" href=\"/database/db/Spec/Spec-S2.tex\"></a></p> "
},
{
 "tags": ["Proof by Induction"],
 "question_id":86301,
 "title": "Spec-S3-Q1",
 "body": "Product, sum, binomial coefficient.  <p><img src=\"/database/db/Spec/Spec-S3-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP III Specimen Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/Spec/Spec-S3.pdf\"></a><a  class=\"linktex\" href=\"/database/db/Spec/Spec-S3.tex\"></a></p> "
},
{
 "tags": ["Proof,","Numbers"],
 "question_id":86302,
 "title": "Spec-S3-Q2",
 "body": "Binomial expansion, positive integer, inequality, power, Bernoulli inequality.  <p><img src=\"/database/db/Spec/Spec-S3-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP III Specimen Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/Spec/Spec-S3.pdf\"></a><a  class=\"linktex\" href=\"/database/db/Spec/Spec-S3.tex\"></a></p> "
},
{
 "tags": ["Complex numbers"],
 "question_id":86303,
 "title": "Spec-S3-Q3",
 "body": "Triangle inequality, solution of complex polynomial equation.  <p><img src=\"/database/db/Spec/Spec-S3-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP III Specimen Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/Spec/Spec-S3.pdf\"></a><a  class=\"linktex\" href=\"/database/db/Spec/Spec-S3.tex\"></a></p> "
},
{
 "tags": ["Conic sections"],
 "question_id":86304,
 "title": "Spec-S3-Q4",
 "body": "Coordinate geometry, tangent, parabola, directrix, straight line.  <p><img src=\"/database/db/Spec/Spec-S3-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP III Specimen Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/Spec/Spec-S3.pdf\"></a><a  class=\"linktex\" href=\"/database/db/Spec/Spec-S3.tex\"></a></p> "
},
{
 "tags": ["Trigonometry"],
 "question_id":86305,
 "title": "Spec-S3-Q5",
 "body": "Curve sketching, non-zero solutions, small approximations, sine function, interval.  <p><img src=\"/database/db/Spec/Spec-S3-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP III Specimen Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/Spec/Spec-S3.pdf\"></a><a  class=\"linktex\" href=\"/database/db/Spec/Spec-S3.tex\"></a></p> "
},
{
 "tags": ["Integration by parts"],
 "question_id":86306,
 "title": "Spec-S3-Q6",
 "body": "Recurrence relation, integral, sech, hyperbolic function.  <p><img src=\"/database/db/Spec/Spec-S3-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP III Specimen Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/Spec/Spec-S3.pdf\"></a><a  class=\"linktex\" href=\"/database/db/Spec/Spec-S3.tex\"></a></p> "
},
{
 "tags": ["Differential equation"],
 "question_id":86307,
 "title": "Spec-S3-Q7",
 "body": "Solution by substitution, general solution, second order equation.  <p><img src=\"/database/db/Spec/Spec-S3-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP III Specimen Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/Spec/Spec-S3.pdf\"></a><a  class=\"linktex\" href=\"/database/db/Spec/Spec-S3.tex\"></a></p> "
},
{
 "tags": ["Vectors"],
 "question_id":86308,
 "title": "Spec-S3-Q8",
 "body": "Sum of squares, midpoints on opposite edges, tetrahedron, scalar product, inequality.  <p><img src=\"/database/db/Spec/Spec-S3-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP III Specimen Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/Spec/Spec-S3.pdf\"></a><a  class=\"linktex\" href=\"/database/db/Spec/Spec-S3.tex\"></a></p> "
},
{
 "tags": ["Groups"],
 "question_id":86309,
 "title": "Spec-S3-Q9",
 "body": "Group of matrices under matrix multiplication, associative, subset, integers, identity matrix, commute.  <p><img src=\"/database/db/Spec/Spec-S3-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP III Specimen Question 9 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/Spec/Spec-S3.pdf\"></a><a  class=\"linktex\" href=\"/database/db/Spec/Spec-S3.tex\"></a></p> "
},
{
 "tags": ["Number theory"],
 "question_id":86310,
 "title": "Spec-S3-Q10",
 "body": "Odd squares, remainder, even squares, expressable as a sum of three squares, divisibility.  <p><img src=\"/database/db/Spec/Spec-S3-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP III Specimen Question 10 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/Spec/Spec-S3.pdf\"></a><a  class=\"linktex\" href=\"/database/db/Spec/Spec-S3.tex\"></a></p> "
},
{
 "tags": ["Differential equation"],
 "question_id":86311,
 "title": "Spec-S3-Q11",
 "body": "Identical snowploughs, constant rate acceleration, first order equation, general solution, time-distance (x-t).  <p><img src=\"/database/db/Spec/Spec-S3-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP III Specimen Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/Spec/Spec-S3.pdf\"></a><a  class=\"linktex\" href=\"/database/db/Spec/Spec-S3.tex\"></a></p> "
},
{
 "tags": ["Equilibrium"],
 "question_id":86312,
 "title": "Spec-S3-Q12",
 "body": "Uniform rod, light inextensible string, inclined to the vertical, tension, resolve forces, centre of mass.  <p><img src=\"/database/db/Spec/Spec-S3-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP III Specimen Question 12 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/Spec/Spec-S3.pdf\"></a><a  class=\"linktex\" href=\"/database/db/Spec/Spec-S3.tex\"></a></p> "
},
{
 "tags": ["Circular motion"],
 "question_id":86313,
 "title": "Spec-S3-Q13",
 "body": "Bead on a rolling circular hoop, second order differential equation, slip, reaction force.  <p><img src=\"/database/db/Spec/Spec-S3-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP III Specimen Question 13 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/Spec/Spec-S3.pdf\"></a><a  class=\"linktex\" href=\"/database/db/Spec/Spec-S3.tex\"></a></p> "
},
{
 "tags": ["Collision"],
 "question_id":86314,
 "title": "Spec-S3-Q14",
 "body": "Uniform rod, rotation about midpoint on smooth horizontal table, perfectly elastic collision, angular speed.  <p><img src=\"/database/db/Spec/Spec-S3-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP III Specimen Question 14 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/Spec/Spec-S3.pdf\"></a><a  class=\"linktex\" href=\"/database/db/Spec/Spec-S3.tex\"></a></p> "
},
{
 "tags": ["Optimisation"],
 "question_id":86315,
 "title": "Spec-S3-Q15",
 "body": "Mountain villages, vertices of tetrahedron, snowfall probability, independence.  <p><img src=\"/database/db/Spec/Spec-S3-Q15.png\" alt=\"q\" width=\"720\"></p><b>[STEP III Specimen Question 15 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/Spec/Spec-S3.pdf\"></a><a  class=\"linktex\" href=\"/database/db/Spec/Spec-S3.tex\"></a></p> "
},
{
 "tags": ["Combinatorics"],
 "question_id":86316,
 "title": "Spec-S3-Q16",
 "body": "President of the republic, no children, sons and daughters, expectation.  <p><img src=\"/database/db/Spec/Spec-S3-Q16.png\" alt=\"q\" width=\"720\"></p><b>[STEP III Specimen Question 16 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/Spec/Spec-S3.pdf\"></a><a  class=\"linktex\" href=\"/database/db/Spec/Spec-S3.tex\"></a></p> "
},
{
 "tags": ["Curve sketching"],
 "question_id":87101,
 "title": "87-S1-Q1",
 "body": "Trigonometric and exponential functions, stationary points, geometric progression, ratio, differentiation.  <p><img src=\"/database/db/87/87-S1-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1987 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/87/87-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/87/87-S1.tex\"></a></p> "
},
{
 "tags": ["Integration"],
 "question_id":87102,
 "title": "87-S1-Q2",
 "body": "Coordinate geometry, circles, area of region, limit.  <p><img src=\"/database/db/87/87-S1-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1987 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/87/87-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/87/87-S1.tex\"></a></p> "
},
{
 "tags": ["Differential equation"],
 "question_id":87103,
 "title": "87-S1-Q3",
 "body": "Solution by substitution, initial condition, limit, first order equation.  <p><img src=\"/database/db/87/87-S1-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1987 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/87/87-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/87/87-S1.tex\"></a></p> "
},
{
 "tags": ["Series"],
 "question_id":87104,
 "title": "87-S1-Q4",
 "body": "Analysis, sum of infinite series, logarithm, exponential function.  <p><img src=\"/database/db/87/87-S1-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1987 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/87/87-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/87/87-S1.tex\"></a></p> "
},
{
 "tags": ["Integration by substitution"],
 "question_id":87105,
 "title": "87-S1-Q5",
 "body": "Trigonometry, sine and cosine functions.  <p><img src=\"/database/db/87/87-S1-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1987 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/87/87-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/87/87-S1.tex\"></a></p> "
},
{
 "tags": ["Integration"],
 "question_id":87106,
 "title": "87-S1-Q6",
 "body": "Integral of functions, geometrical argument, inequality, trigonometric and inverse function, differentiation.  <p><img src=\"/database/db/87/87-S1-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1987 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/87/87-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/87/87-S1.tex\"></a></p> "
},
{
 "tags": ["Trigonometry"],
 "question_id":87107,
 "title": "87-S1-Q7",
 "body": "Sum, finite sine series, tangent.  <p><img src=\"/database/db/87/87-S1-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1987 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/87/87-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/87/87-S1.tex\"></a></p> "
},
{
 "tags": ["Integral"],
 "question_id":87108,
 "title": "87-S1-Q8",
 "body": "Integration by substitution, equivalent, 1/t, 1/x, trigonometry.  <p><img src=\"/database/db/87/87-S1-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1987 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/87/87-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/87/87-S1.tex\"></a></p> "
},
{
 "tags": ["Vectors"],
 "question_id":87109,
 "title": "87-S1-Q9",
 "body": "Coordinate geometry, triangle in a plane, plane sketching, parametrisation, position vector.  <p><img src=\"/database/db/87/87-S1-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1987 Question 9 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/87/87-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/87/87-S1.tex\"></a></p> "
},
{
 "tags": ["Hooke's Law"],
 "question_id":87110,
 "title": "87-S1-Q10",
 "body": "Spring, modulus of elasticity, cylinder, equilibrium, stretched spring.  <p><img src=\"/database/db/87/87-S1-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1987 Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/87/87-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/87/87-S1.tex\"></a></p> "
},
{
 "tags": ["Energy"],
 "question_id":87111,
 "title": "87-S1-Q11",
 "body": "Momentum, sphere, lose contact, energy consideration, particle striking floor.  <p><img src=\"/database/db/87/87-S1-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1987 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/87/87-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/87/87-S1.tex\"></a></p> "
},
{
 "tags": ["Collision"],
 "question_id":87112,
 "title": "87-S1-Q12",
 "body": "Bouncing ball down flight of stairs, momentum, coefficient of restitution, middle of step, perpendicular.  <p><img src=\"/database/db/87/87-S1-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1987 Question 12 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/87/87-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/87/87-S1.tex\"></a></p> "
},
{
 "tags": ["Forces"],
 "question_id":87113,
 "title": "87-S1-Q13",
 "body": "Force, non-constant acceleration, first order differential equation, position, x-t graph.  <p><img src=\"/database/db/87/87-S1-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1987 Question 13 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/87/87-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/87/87-S1.tex\"></a></p> "
},
{
 "tags": ["Probability"],
 "question_id":87114,
 "title": "87-S1-Q14",
 "body": "Table tennis tournament, successive, probability, C1.  <p><img src=\"/database/db/87/87-S1-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1987 Question 14 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/87/87-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/87/87-S1.tex\"></a></p> "
},
{
 "tags": ["Uniform distribution"],
 "question_id":87115,
 "title": "87-S1-Q15",
 "body": "Continuous random variable, point on a unit circle, mean and variance.  <p><img src=\"/database/db/87/87-S1-Q15.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1987 Question 15 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/87/87-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/87/87-S1.tex\"></a></p> "
},
{
 "tags": ["Normal distribution"],
 "question_id":87116,
 "title": "87-S1-Q16",
 "body": "Parliament of Laputa, progressive and preservative, normal approximation, vote.  <p><img src=\"/database/db/87/87-S1-Q16.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1987 Question 16 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/87/87-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/87/87-S1.tex\"></a></p> "
},
{
 "tags": ["Quadratics"],
 "question_id":87201,
 "title": "87-S2-Q1",
 "body": "Algebra, substitution, general case, function, C1.  <p><img src=\"/database/db/87/87-S2-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1987 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/87/87-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/87/87-S2.tex\"></a></p> "
},
{
 "tags": ["Trigonometry"],
 "question_id":87202,
 "title": "87-S2-Q2",
 "body": "Sine function, angles, identity, quartic, quadratic.  <p><img src=\"/database/db/87/87-S2-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1987 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/87/87-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/87/87-S2.tex\"></a></p> "
},
{
 "tags": ["Surds"],
 "question_id":87203,
 "title": "87-S2-Q3",
 "body": "Algebra, quadratic function, positive integers.  <p><img src=\"/database/db/87/87-S2-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1987 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/87/87-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/87/87-S2.tex\"></a></p> "
},
{
 "tags": ["Complex numbers"],
 "question_id":87204,
 "title": "87-S2-Q4",
 "body": "Argand diagram, geometry, necessary and sufficient, if and only if, vertices of equilateral triangle.  <p><img src=\"/database/db/87/87-S2-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1987 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/87/87-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/87/87-S2.tex\"></a></p> "
},
{
 "tags": ["Functions"],
 "question_id":87205,
 "title": "87-S2-Q5",
 "body": "Lagrange's identity, inverse functions, root of equation, exponential function, derivatives, series, sequences.  <p><img src=\"/database/db/87/87-S2-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1987 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/87/87-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/87/87-S2.tex\"></a></p> "
},
{
 "tags": ["Integral"],
 "question_id":87206,
 "title": "87-S2-Q6",
 "body": "Integration by substitution, trigonometric function, parameter.  <p><img src=\"/database/db/87/87-S2-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1987 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/87/87-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/87/87-S2.tex\"></a></p> "
},
{
 "tags": ["Integration"],
 "question_id":87207,
 "title": "87-S2-Q7",
 "body": "Definite integral, trapezium rule, intervals, logarithm, factorial function, curve sketching, stirling's approximation.  <p><img src=\"/database/db/87/87-S2-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1987 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/87/87-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/87/87-S2.tex\"></a></p> "
},
{
 "tags": ["Vectors"],
 "question_id":87208,
 "title": "87-S2-Q8",
 "body": "Position vector, locus, spheres, planes, algebra, geometrical, equivalent.  <p><img src=\"/database/db/87/87-S2-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1987 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/87/87-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/87/87-S2.tex\"></a></p> "
},
{
 "tags": ["Matrices"],
 "question_id":87209,
 "title": "87-S2-Q9",
 "body": "Square matrix, non-singular, unit, zero matrix, if and only if.  <p><img src=\"/database/db/87/87-S2-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1987 Question 9 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/87/87-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/87/87-S2.tex\"></a></p> "
},
{
 "tags": ["Groups"],
 "question_id":87210,
 "title": "87-S2-Q10",
 "body": "Binary operation, group axioms, set.  <p><img src=\"/database/db/87/87-S2-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1987 Question 10 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/87/87-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/87/87-S2.tex\"></a></p> "
},
{
 "tags": ["Friction"],
 "question_id":87211,
 "title": "87-S2-Q11",
 "body": "Ring, inclined plane, uniform rod, pivot, limiting equilibrium.  <p><img src=\"/database/db/87/87-S2-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1987 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/87/87-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/87/87-S2.tex\"></a></p> "
},
{
 "tags": ["Equilibrium"],
 "question_id":87212,
 "title": "87-S2-Q12",
 "body": "String, ring, static equilibrium, shortest distance, plane polar coordinates, equation of curve.  <p><img src=\"/database/db/87/87-S2-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1987 Question 12 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/87/87-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/87/87-S2.tex\"></a></p> "
},
{
 "tags": ["Collision"],
 "question_id":87213,
 "title": "87-S2-Q13",
 "body": "Coefficient of restitution, ice snooker, puck, cushions, table, path, ratio.  <p><img src=\"/database/db/87/87-S2-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1987 Question 13 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/87/87-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/87/87-S2.tex\"></a></p> "
},
{
 "tags": ["Hooke's law"],
 "question_id":87214,
 "title": "87-S2-Q14",
 "body": "Second order differential equation, uniform elastic band, modulus of elasticity, circular cone, vertex.  <p><img src=\"/database/db/87/87-S2-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1987 Question 14 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/87/87-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/87/87-S2.tex\"></a></p> "
},
{
 "tags": ["Uniform distribution"],
 "question_id":87215,
 "title": "87-S2-Q15",
 "body": "Train and lorry, level crossing, collision, independent random variables.  <p><img src=\"/database/db/87/87-S2-Q15.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1987 Question 15 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/87/87-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/87/87-S2.tex\"></a></p> "
},
{
 "tags": ["Tree diagram"],
 "question_id":87216,
 "title": "87-S2-Q16",
 "body": "Logic, body in fridge, enemy, truth and lies, probability, C1.  <p><img src=\"/database/db/87/87-S2-Q16.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1987 Question 16 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/87/87-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/87/87-S2.tex\"></a></p> "
},
{
 "tags": ["Numbers"],
 "question_id":87301,
 "title": "87-S3-Q1",
 "body": "Positive integers, divisibility, factorial function, C1.  <p><img src=\"/database/db/87/87-S3-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1987 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/87/87-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/87/87-S3.tex\"></a></p> "
},
{
 "tags": ["Integration by parts"],
 "question_id":87302,
 "title": "87-S3-Q2",
 "body": "Trigonometric function, sine, cosine function, recurrence relation, iteration, odd, even.  <p><img src=\"/database/db/87/87-S3-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1987 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/87/87-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/87/87-S3.tex\"></a></p> "
},
{
 "tags": ["Complex numbers"],
 "question_id":87303,
 "title": "87-S3-Q3",
 "body": "Inequality, binomial expansion, trigonometric identity, arctan function.  <p><img src=\"/database/db/87/87-S3-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1987 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/87/87-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/87/87-S3.tex\"></a></p> "
},
{
 "tags": ["Functions"],
 "question_id":87304,
 "title": "87-S3-Q4",
 "body": "Rotating curves, funnels, surfaces, inverse hyperbolic function, water tap.  <p><img src=\"/database/db/87/87-S3-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1987 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/87/87-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/87/87-S3.tex\"></a></p> "
},
{
 "tags": ["Modulo arithmetic"],
 "question_id":87305,
 "title": "87-S3-Q5",
 "body": "Numbers, secret message, encoding, decoding, modulo 50.  <p><img src=\"/database/db/87/87-S3-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1987 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/87/87-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/87/87-S3.tex\"></a></p> "
},
{
 "tags": ["Differential equations"],
 "question_id":87306,
 "title": "87-S3-Q6",
 "body": "Forced system of first order equation, explicit solution.  <p><img src=\"/database/db/87/87-S3-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1987 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/87/87-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/87/87-S3.tex\"></a></p> "
},
{
 "tags": ["Analysis"],
 "question_id":87307,
 "title": "87-S3-Q7",
 "body": "Taylor series of arctan function with remainder, inequality, modulus function, series, error approximation.  <p><img src=\"/database/db/87/87-S3-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1987 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/87/87-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/87/87-S3.tex\"></a></p> "
},
{
 "tags": ["Inequalities"],
 "question_id":87308,
 "title": "87-S3-Q8",
 "body": "Inequality, diagonals of a parallelogram, maximum area, set of points, sketching, C1.  <p><img src=\"/database/db/87/87-S3-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1987 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/87/87-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/87/87-S3.tex\"></a></p> "
},
{
 "tags": ["Groups"],
 "question_id":87309,
 "title": "87-S3-Q9",
 "body": "Group multiplication, product group, abelian, if and only if, subgroup, isomorphism, cyclic group.  <p><img src=\"/database/db/87/87-S3-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1987 Question 9 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/87/87-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/87/87-S3.tex\"></a></p> "
},
{
 "tags": ["Induction"],
 "question_id":87310,
 "title": "87-S3-Q10",
 "body": "Bernoulli polynomial, recurrence relation, differentiation, integration, series, telescoping sequence, sum.  <p><img src=\"/database/db/87/87-S3-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1987 Question 10 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/87/87-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/87/87-S3.tex\"></a></p> "
},
{
 "tags": ["Time-distance graphs"],
 "question_id":87311,
 "title": "87-S3-Q11",
 "body": "Bank of river, swimming downstream, shortest possible time, stump, sketch, C1.  <p><img src=\"/database/db/87/87-S3-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1987 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/87/87-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/87/87-S3.tex\"></a></p> "
},
{
 "tags": ["Variable mass"],
 "question_id":87312,
 "title": "87-S3-Q12",
 "body": "Firework burning, rocket, first order differential equation.  <p><img src=\"/database/db/87/87-S3-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1987 Question 12 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/87/87-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/87/87-S3.tex\"></a></p> "
},
{
 "tags": ["Friction"],
 "question_id":87313,
 "title": "87-S3-Q13",
 "body": "Uniform rod, inclined, coefficient of friction, slide, equilibrium.  <p><img src=\"/database/db/87/87-S3-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1987 Question 13 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/87/87-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/87/87-S3.tex\"></a></p> "
},
{
 "tags": ["Gravitational force"],
 "question_id":87314,
 "title": "87-S3-Q14",
 "body": "Sphere, attraction, first order differential equation, cloud, instantanesous velocity.  <p><img src=\"/database/db/87/87-S3-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1987 Question 14 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/87/87-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/87/87-S3.tex\"></a></p> "
},
{
 "tags": ["Optimisation"],
 "question_id":87315,
 "title": "87-S3-Q15",
 "body": "Expectation, recurrence relation, Steppe syndrome.  <p><img src=\"/database/db/87/87-S3-Q15.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1987 Question 15 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/87/87-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/87/87-S3.tex\"></a></p> "
},
{
 "tags": ["Uniform distribution"],
 "question_id":87316,
 "title": "87-S3-Q16",
 "body": "Independent identically distributed random variables (iid), min, max, Lord Copper, lottery.  <p><img src=\"/database/db/87/87-S3-Q16.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1987 Question 16 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/87/87-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/87/87-S3.tex\"></a></p> "
},
{
 "tags": ["Curve sketching"],
 "question_id":88101,
 "title": "88-S1-Q1",
 "body": "Logarithm, lnx/x, positive integers, functions, C1.  <p><img src=\"/database/db/88/88-S1-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1988 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/88/88-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/88/88-S1.tex\"></a></p> "
},
{
 "tags": ["Differentiation"],
 "question_id":88102,
 "title": "88-S1-Q2",
 "body": "Trigonometry, stationary point, maxima, minima, derivatives.  <p><img src=\"/database/db/88/88-S1-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1988 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/88/88-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/88/88-S1.tex\"></a></p> "
},
{
 "tags": ["Coordinate geometry"],
 "question_id":88103,
 "title": "88-S1-Q3",
 "body": "Square, C1.  <p><img src=\"/database/db/88/88-S1-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1988 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/88/88-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/88/88-S1.tex\"></a></p> "
},
{
 "tags": ["Elementary geometry"],
 "question_id":88104,
 "title": "88-S1-Q4",
 "body": "Proof, line segments, midpoint, intersection, C1.  <p><img src=\"/database/db/88/88-S1-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1988 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/88/88-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/88/88-S1.tex\"></a></p> "
},
{
 "tags": ["Binomial expansion"],
 "question_id":88105,
 "title": "88-S1-Q5",
 "body": "Partial fraction, taylor series, general term.  <p><img src=\"/database/db/88/88-S1-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1988 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/88/88-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/88/88-S1.tex\"></a></p> "
},
{
 "tags": ["Complex numbers"],
 "question_id":88106,
 "title": "88-S1-Q6",
 "body": "Argand diagram, perpendicular, geometry, real part, convex hexagon, distance.  <p><img src=\"/database/db/88/88-S1-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1988 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/88/88-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/88/88-S1.tex\"></a></p> "
},
{
 "tags": ["Quadratic function"],
 "question_id":88107,
 "title": "88-S1-Q7",
 "body": "Differentiation, modulus function, functional equation, inequality, C1.  <p><img src=\"/database/db/88/88-S1-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1988 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/88/88-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/88/88-S1.tex\"></a></p> "
},
{
 "tags": ["Euclidean geometry"],
 "question_id":88108,
 "title": "88-S1-Q8",
 "body": "Skew (non-planar) quadrilaterial, opposite sides, midpoints, diagonals, C1.  <p><img src=\"/database/db/88/88-S1-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1988 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/88/88-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/88/88-S1.tex\"></a></p> "
},
{
 "tags": ["Integral"],
 "question_id":88109,
 "title": "88-S1-Q9",
 "body": "Integration by parts, trigonometry, substitution.  <p><img src=\"/database/db/88/88-S1-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1988 Question 9 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/88/88-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/88/88-S1.tex\"></a></p> "
},
{
 "tags": ["Projectile motion"],
 "question_id":88110,
 "title": "88-S1-Q10",
 "body": "Sniper, bullet, circle.  <p><img src=\"/database/db/88/88-S1-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1988 Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/88/88-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/88/88-S1.tex\"></a></p> "
},
{
 "tags": ["Centre of mass"],
 "question_id":88111,
 "title": "88-S1-Q11",
 "body": "Uniform circular arc, plane framework, equilibrium.  <p><img src=\"/database/db/88/88-S1-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1988 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/88/88-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/88/88-S1.tex\"></a></p> "
},
{
 "tags": ["Equilibrium"],
 "question_id":88112,
 "title": "88-S1-Q12",
 "body": "Skater, force, travelling in a circle, hitting bank.  <p><img src=\"/database/db/88/88-S1-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1988 Question 12 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/88/88-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/88/88-S1.tex\"></a></p> "
},
{
 "tags": ["Hooke's law"],
 "question_id":88113,
 "title": "88-S1-Q13",
 "body": "Nellie the elephant, circus, elasticity, time-distance.  <p><img src=\"/database/db/88/88-S1-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1988 Question 13 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/88/88-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/88/88-S1.tex\"></a></p> "
},
{
 "tags": ["Normal distribution"],
 "question_id":88114,
 "title": "88-S1-Q14",
 "body": "Normal random variable, expectation, pdf, cdf, HOGPo, tourist, vloska.  <p><img src=\"/database/db/88/88-S1-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1988 Question 14 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/88/88-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/88/88-S1.tex\"></a></p> "
},
{
 "tags": ["Probability distribution"],
 "question_id":88115,
 "title": "88-S1-Q15",
 "body": "Fridge football, goals and fouls, probability distribution.  <p><img src=\"/database/db/88/88-S1-Q15.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1988 Question 15 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/88/88-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/88/88-S1.tex\"></a></p> "
},
{
 "tags": ["Pdf"],
 "question_id":88116,
 "title": "88-S1-Q16",
 "body": "Wondergoo, cars, rust, conditional probability.  <p><img src=\"/database/db/88/88-S1-Q16.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1988 Question 16 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/88/88-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/88/88-S1.tex\"></a></p> "
},
{
 "tags": ["Binomial expansion"],
 "question_id":88201,
 "title": "88-S2-Q1",
 "body": "Laurent series, series.  <p><img src=\"/database/db/88/88-S2-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1988 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/88/88-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/88/88-S2.tex\"></a></p> "
},
{
 "tags": ["Quadratic equation"],
 "question_id":88202,
 "title": "88-S2-Q2",
 "body": "C1.  <p><img src=\"/database/db/88/88-S2-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1988 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/88/88-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/88/88-S2.tex\"></a></p> "
},
{
 "tags": ["Polynomial equations"],
 "question_id":88203,
 "title": "88-S2-Q3",
 "body": "Quadratic equation, roots (complex), cubic equation, real, C1.  <p><img src=\"/database/db/88/88-S2-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1988 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/88/88-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/88/88-S2.tex\"></a></p> "
},
{
 "tags": ["Complex numbers"],
 "question_id":88204,
 "title": "88-S2-Q4",
 "body": "Argand diagram, locus.  <p><img src=\"/database/db/88/88-S2-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1988 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/88/88-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/88/88-S2.tex\"></a></p> "
},
{
 "tags": ["Trigonometry"],
 "question_id":88205,
 "title": "88-S2-Q5",
 "body": "Complex numbers, de Moivre's theorem, imaginary part, tan, product.  <p><img src=\"/database/db/88/88-S2-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1988 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/88/88-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/88/88-S2.tex\"></a></p> "
},
{
 "tags": ["Curve sketching"],
 "question_id":88206,
 "title": "88-S2-Q6",
 "body": "Hyperbolic function, turning point, differentiation, positive function.  <p><img src=\"/database/db/88/88-S2-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1988 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/88/88-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/88/88-S2.tex\"></a></p> "
},
{
 "tags": ["Integral"],
 "question_id":88207,
 "title": "88-S2-Q7",
 "body": "Integration by substitution, trigonometry, monstrously hard.  <p><img src=\"/database/db/88/88-S2-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1988 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/88/88-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/88/88-S2.tex\"></a></p> "
},
{
 "tags": ["Differential equation"],
 "question_id":88208,
 "title": "88-S2-Q8",
 "body": "System of first order equation, aardvark, buffalo, population dynamic, matrix method, linear combination, equilibrium, stationary point.  <p><img src=\"/database/db/88/88-S2-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1988 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/88/88-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/88/88-S2.tex\"></a></p> "
},
{
 "tags": ["Groups"],
 "question_id":88209,
 "title": "88-S2-Q9",
 "body": "Subgroups.  <p><img src=\"/database/db/88/88-S2-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1988 Question 9 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/88/88-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/88/88-S2.tex\"></a></p> "
},
{
 "tags": ["Vector geometry"],
 "question_id":88210,
 "title": "88-S2-Q10",
 "body": "3d surface, triangle, scalar product, cross product, locus, position vector.  <p><img src=\"/database/db/88/88-S2-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1988 Question 10 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/88/88-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/88/88-S2.tex\"></a></p> "
},
{
 "tags": ["Circular motion"],
 "question_id":88211,
 "title": "88-S2-Q11",
 "body": "Particle, cartesian axes, first order equation, string.  <p><img src=\"/database/db/88/88-S2-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1988 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/88/88-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/88/88-S2.tex\"></a></p> "
},
{
 "tags": ["Inextensible string"],
 "question_id":88212,
 "title": "88-S2-Q12",
 "body": "Hole, surface of table, string.  <p><img src=\"/database/db/88/88-S2-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1988 Question 12 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/88/88-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/88/88-S2.tex\"></a></p> "
},
{
 "tags": ["Friction"],
 "question_id":88213,
 "title": "88-S2-Q13",
 "body": "Librarian, book, coefficient of friction, slip.  <p><img src=\"/database/db/88/88-S2-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1988 Question 13 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/88/88-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/88/88-S2.tex\"></a></p> "
},
{
 "tags": ["SHM"],
 "question_id":88214,
 "title": "88-S2-Q14",
 "body": "Axel, rotating about vertical axis, angular speed, inclined angle.  <p><img src=\"/database/db/88/88-S2-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1988 Question 14 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/88/88-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/88/88-S2.tex\"></a></p> "
},
{
 "tags": ["Elementary probability"],
 "question_id":88215,
 "title": "88-S2-Q15",
 "body": "Examination paper, mark, elementary probability, C1.  <p><img src=\"/database/db/88/88-S2-Q15.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1988 Question 15 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/88/88-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/88/88-S2.tex\"></a></p> "
},
{
 "tags": ["Normal distribution"],
 "question_id":88216,
 "title": "88-S2-Q16",
 "body": "Quadratic equation, expectation, variance, normal distribution.  <p><img src=\"/database/db/88/88-S2-Q16.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1988 Question 16 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/88/88-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/88/88-S2.tex\"></a></p> "
},
{
 "tags": ["Curve sketching"],
 "question_id":88301,
 "title": "88-S3-Q1",
 "body": "Integral, inequality, exponential function.  <p><img src=\"/database/db/88/88-S3-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1988 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/88/88-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/88/88-S3.tex\"></a></p> "
},
{
 "tags": ["Difference equation"],
 "question_id":88302,
 "title": "88-S3-Q2",
 "body": "Recurrence relation, quadratic equation, proof by induction, C1.  <p><img src=\"/database/db/88/88-S3-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1988 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/88/88-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/88/88-S3.tex\"></a></p> "
},
{
 "tags": ["Complex number"],
 "question_id":88303,
 "title": "88-S3-Q3",
 "body": "Argand diagram, locus, curve sketching.  <p><img src=\"/database/db/88/88-S3-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1988 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/88/88-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/88/88-S3.tex\"></a></p> "
},
{
 "tags": ["Optimisation"],
 "question_id":88304,
 "title": "88-S3-Q4",
 "body": "Kingdom, parabolic hill, minimal, differentiation, rotating curves. C1.  <p><img src=\"/database/db/88/88-S3-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1988 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/88/88-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/88/88-S3.tex\"></a></p> "
},
{
 "tags": ["Geometric sequence"],
 "question_id":88305,
 "title": "88-S3-Q5",
 "body": "Engineers, borrow money, interest, tunnel, C1.  <p><img src=\"/database/db/88/88-S3-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1988 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/88/88-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/88/88-S3.tex\"></a></p> "
},
{
 "tags": ["Trigonometry"],
 "question_id":88306,
 "title": "88-S3-Q6",
 "body": "Differentiation, sine and cosine function, approximation.  <p><img src=\"/database/db/88/88-S3-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1988 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/88/88-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/88/88-S3.tex\"></a></p> "
},
{
 "tags": ["Differential equation"],
 "question_id":88307,
 "title": "88-S3-Q7",
 "body": "Sturm-Liouville, orthogonal functions.  <p><img src=\"/database/db/88/88-S3-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1988 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/88/88-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/88/88-S3.tex\"></a></p> "
},
{
 "tags": ["Coordinate geometry"],
 "question_id":88308,
 "title": "88-S3-Q8",
 "body": "Tangent and normal, parabola, determinant, area, necessary and sufficient, concurrent.  <p><img src=\"/database/db/88/88-S3-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1988 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/88/88-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/88/88-S3.tex\"></a></p> "
},
{
 "tags": ["Groups"],
 "question_id":88309,
 "title": "88-S3-Q9",
 "body": "Order of group, conjugation.  <p><img src=\"/database/db/88/88-S3-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1988 Question 9 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/88/88-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/88/88-S3.tex\"></a></p> "
},
{
 "tags": ["Polar coordinates"],
 "question_id":88310,
 "title": "88-S3-Q10",
 "body": "Greyhounds, polar curve, vertices of regular n-gon.  <p><img src=\"/database/db/88/88-S3-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1988 Question 10 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/88/88-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/88/88-S3.tex\"></a></p> "
},
{
 "tags": ["Friction"],
 "question_id":88311,
 "title": "88-S3-Q11",
 "body": "Coefficient of friction, ladder, minima, inclined plane.  <p><img src=\"/database/db/88/88-S3-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1988 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/88/88-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/88/88-S3.tex\"></a></p> "
},
{
 "tags": ["Collision"],
 "question_id":88312,
 "title": "88-S3-Q12",
 "body": "Coefficient of restitution, billiard ball, maximum angle of deflection.  <p><img src=\"/database/db/88/88-S3-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1988 Question 12 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/88/88-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/88/88-S3.tex\"></a></p> "
},
{
 "tags": ["Differential equation"],
 "question_id":88313,
 "title": "88-S3-Q13",
 "body": "Air resistance, first order equation, gravity, goalkeeper, tan.  <p><img src=\"/database/db/88/88-S3-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1988 Question 13 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/88/88-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/88/88-S3.tex\"></a></p> "
},
{
 "tags": ["Projectile motion"],
 "question_id":88314,
 "title": "88-S3-Q14",
 "body": "Quadratic equation, bead on wire, angle, trigonometric function, polar equation.  <p><img src=\"/database/db/88/88-S3-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1988 Question 14 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/88/88-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/88/88-S3.tex\"></a></p> "
},
{
 "tags": ["Difference equation"],
 "question_id":88315,
 "title": "88-S3-Q15",
 "body": "Library book, quadratic equation.  <p><img src=\"/database/db/88/88-S3-Q15.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1988 Question 15 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/88/88-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/88/88-S3.tex\"></a></p> "
},
{
 "tags": ["Combinatorics"],
 "question_id":88316,
 "title": "88-S3-Q16",
 "body": "Balls from urns, mean, expectation, variance, sum of random variable, indicator function.  <p><img src=\"/database/db/88/88-S3-Q16.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1988 Question 16 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/88/88-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/88/88-S3.tex\"></a></p> "
},
{
 "tags": ["Euclidean geometry"],
 "question_id":89101,
 "title": "89-S1-Q1",
 "body": "Semi circles, parabola, vertex, arc, midpoint, area, C1.  <p><img src=\"/database/db/89/89-S1-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1989 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/89/89-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/89/89-S1.tex\"></a></p> "
},
{
 "tags": ["Integration"],
 "question_id":89102,
 "title": "89-S1-Q2",
 "body": "Logarithm function, approximating area, rectangle, limit.  <p><img src=\"/database/db/89/89-S1-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1989 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/89/89-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/89/89-S1.tex\"></a></p> "
},
{
 "tags": ["Vector geometry"],
 "question_id":89103,
 "title": "89-S1-Q3",
 "body": "Scalar product, triangle, line segments, inequality.  <p><img src=\"/database/db/89/89-S1-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1989 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/89/89-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/89/89-S1.tex\"></a></p> "
},
{
 "tags": ["Euclidean geometry"],
 "question_id":89104,
 "title": "89-S1-Q4",
 "body": "Collinear points, line segment, triangle, general position, C1.  <p><img src=\"/database/db/89/89-S1-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1989 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/89/89-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/89/89-S1.tex\"></a></p> "
},
{
 "tags": ["Binomial expansion"],
 "question_id":89105,
 "title": "89-S1-Q5",
 "body": "Binomial coefficient, sum of.  <p><img src=\"/database/db/89/89-S1-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1989 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/89/89-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/89/89-S1.tex\"></a></p> "
},
{
 "tags": ["Coordinate geometry"],
 "question_id":89106,
 "title": "89-S1-Q6",
 "body": "Normal to curve, differential equation, minimum point, differentiation, exponential function.  <p><img src=\"/database/db/89/89-S1-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1989 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/89/89-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/89/89-S1.tex\"></a></p> "
},
{
 "tags": ["Curve sketching"],
 "question_id":89107,
 "title": "89-S1-Q7",
 "body": "Modulus function, rectangle, area, maximimum, implicit, curve, C1.  <p><img src=\"/database/db/89/89-S1-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1989 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/89/89-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/89/89-S1.tex\"></a></p> "
},
{
 "tags": ["Complex numbers"],
 "question_id":89108,
 "title": "89-S1-Q8",
 "body": "de Moivre's theorem, trigonometry, roots of polynomial equation.  <p><img src=\"/database/db/89/89-S1-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1989 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/89/89-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/89/89-S1.tex\"></a></p> "
},
{
 "tags": ["Curve sketching"],
 "question_id":89109,
 "title": "89-S1-Q9",
 "body": "Cubic equations, polynomial, turning points, differentiation, C1.  <p><img src=\"/database/db/89/89-S1-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1989 Question 9 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/89/89-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/89/89-S1.tex\"></a></p> "
},
{
 "tags": ["Acceleration"],
 "question_id":89110,
 "title": "89-S1-Q10",
 "body": "Constant acceleration, Time-distance graph, resistive force.  <p><img src=\"/database/db/89/89-S1-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1989 Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/89/89-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/89/89-S1.tex\"></a></p> "
},
{
 "tags": ["Projectile motion"],
 "question_id":89111,
 "title": "89-S1-Q11",
 "body": "Shot put, horizontal distance, perturbation.  <p><img src=\"/database/db/89/89-S1-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1989 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/89/89-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/89/89-S1.tex\"></a></p> "
},
{
 "tags": ["Centre of mass"],
 "question_id":89112,
 "title": "89-S1-Q12",
 "body": "Tetrahedron, elastic string, modulus of elasticity, Hooke's law, equilibrium  <p><img src=\"/database/db/89/89-S1-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1989 Question 12 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/89/89-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/89/89-S1.tex\"></a></p> "
},
{
 "tags": ["Friction"],
 "question_id":89113,
 "title": "89-S1-Q13",
 "body": "Ladder, normal reaction, frictional force, coefficient of friction, equilibrium.  <p><img src=\"/database/db/89/89-S1-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1989 Question 13 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/89/89-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/89/89-S1.tex\"></a></p> "
},
{
 "tags": ["Continuous random variable"],
 "question_id":89114,
 "title": "89-S1-Q14",
 "body": "Enchanted castle, prevailing wind, princess magic seed, expectation, pdf.  <p><img src=\"/database/db/89/89-S1-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1989 Question 14 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/89/89-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/89/89-S1.tex\"></a></p> "
},
{
 "tags": ["Poission distribution"],
 "question_id":89115,
 "title": "89-S1-Q15",
 "body": "Cycling routes, mean, optimisation.  <p><img src=\"/database/db/89/89-S1-Q15.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1989 Question 15 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/89/89-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/89/89-S1.tex\"></a></p> "
},
{
 "tags": ["Discrete random variable"],
 "question_id":89116,
 "title": "89-S1-Q16",
 "body": "Expectation, probability, long time.  <p><img src=\"/database/db/89/89-S1-Q16.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1989 Question 16 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/89/89-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/89/89-S1.tex\"></a></p> "
},
{
 "tags": ["Cubic equation"],
 "question_id":89201,
 "title": "89-S2-Q1",
 "body": "Algebra, polynomial equation, trigonometry, substitution, counterdatabase.  <p><img src=\"/database/db/89/89-S2-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1989 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/89/89-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/89/89-S2.tex\"></a></p> "
},
{
 "tags": ["Series"],
 "question_id":89202,
 "title": "89-S2-Q2",
 "body": "Taylor series for tan and cot, recurrence relation, trigonometric identity  <p><img src=\"/database/db/89/89-S2-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1989 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/89/89-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/89/89-S2.tex\"></a></p> "
},
{
 "tags": ["Complex numbers"],
 "question_id":89203,
 "title": "89-S2-Q3",
 "body": "Ellipse, hyperbola, intersection, curve sketching.  <p><img src=\"/database/db/89/89-S2-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1989 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/89/89-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/89/89-S2.tex\"></a></p> "
},
{
 "tags": ["Curve sketching"],
 "question_id":89204,
 "title": "89-S2-Q4",
 "body": "Rational function, functional equation, differentiation, inequality, different cases.  <p><img src=\"/database/db/89/89-S2-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1989 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/89/89-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/89/89-S2.tex\"></a></p> "
},
{
 "tags": ["Polar coordinates"],
 "question_id":89205,
 "title": "89-S2-Q5",
 "body": "Differentiation, mirror, ray of light, reflection, bisect, parabola.  <p><img src=\"/database/db/89/89-S2-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1989 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/89/89-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/89/89-S2.tex\"></a></p> "
},
{
 "tags": ["Integration"],
 "question_id":89206,
 "title": "89-S2-Q6",
 "body": "Integration by substitution, inverse function, geometrical interpretation.  <p><img src=\"/database/db/89/89-S2-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1989 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/89/89-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/89/89-S2.tex\"></a></p> "
},
{
 "tags": ["Differential equation"],
 "question_id":89207,
 "title": "89-S2-Q7",
 "body": "Substitution, unique solution, second order equation.  <p><img src=\"/database/db/89/89-S2-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1989 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/89/89-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/89/89-S2.tex\"></a></p> "
},
{
 "tags": ["Groups"],
 "question_id":89208,
 "title": "89-S2-Q8",
 "body": "Complex numbers, permutation group, Mobius transformation, order of group.  <p><img src=\"/database/db/89/89-S2-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1989 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/89/89-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/89/89-S2.tex\"></a></p> "
},
{
 "tags": ["Matrices"],
 "question_id":89209,
 "title": "89-S2-Q9",
 "body": "Matrix power, series, exponential, differential equation, system, integrating factor.  <p><img src=\"/database/db/89/89-S2-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1989 Question 9 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/89/89-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/89/89-S2.tex\"></a></p> "
},
{
 "tags": ["Vector geometry"],
 "question_id":89210,
 "title": "89-S2-Q10",
 "body": "Line, intersection, system of equation, scalars.  <p><img src=\"/database/db/89/89-S2-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1989 Question 10 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/89/89-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/89/89-S2.tex\"></a></p> "
},
{
 "tags": ["Collision"],
 "question_id":89211,
 "title": "89-S2-Q11",
 "body": "Pulley, lift, perfectly inelastic, loss of energy.  <p><img src=\"/database/db/89/89-S2-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1989 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/89/89-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/89/89-S2.tex\"></a></p> "
},
{
 "tags": ["Equilibrium"],
 "question_id":89212,
 "title": "89-S2-Q12",
 "body": "Uniform rectangular lamina, vertical plane, peg.  <p><img src=\"/database/db/89/89-S2-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1989 Question 12 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/89/89-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/89/89-S2.tex\"></a></p> "
},
{
 "tags": ["Centre of mass"],
 "question_id":89213,
 "title": "89-S2-Q13",
 "body": "Dynamically equivalent, rod, particle, rectangular lamina, moment of inertia.  <p><img src=\"/database/db/89/89-S2-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1989 Question 13 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/89/89-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/89/89-S2.tex\"></a></p> "
},
{
 "tags": ["Equilibrium"],
 "question_id":89214,
 "title": "89-S2-Q14",
 "body": "Light inextensible string, circular motion, reaction force.  <p><img src=\"/database/db/89/89-S2-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1989 Question 14 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/89/89-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/89/89-S2.tex\"></a></p> "
},
{
 "tags": ["Probability density function"],
 "question_id":89215,
 "title": "89-S2-Q15",
 "body": "Continuous random variable, pdf, random points on permieter of semicircle, expectation.  <p><img src=\"/database/db/89/89-S2-Q15.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1989 Question 15 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/89/89-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/89/89-S2.tex\"></a></p> "
},
{
 "tags": ["Binomial distribution"],
 "question_id":89216,
 "title": "89-S2-Q16",
 "body": "Widget faults, expectation, probability.  <p><img src=\"/database/db/89/89-S2-Q16.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1989 Question 16 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/89/89-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/89/89-S2.tex\"></a></p> "
},
{
 "tags": ["3-D geometry"],
 "question_id":89301,
 "title": "89-S3-Q1",
 "body": "Area of surface, sphere, conic section, tangent, circle.  <p><img src=\"/database/db/89/89-S3-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1989 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/89/89-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/89/89-S3.tex\"></a></p> "
},
{
 "tags": ["Coordinate geometry"],
 "question_id":89302,
 "title": "89-S3-Q2",
 "body": "Coal seam, inclined plane, bearing, trigonometry, bore hole.  <p><img src=\"/database/db/89/89-S3-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1989 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/89/89-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/89/89-S3.tex\"></a></p> "
},
{
 "tags": ["Groups"],
 "question_id":89303,
 "title": "89-S3-Q3",
 "body": "Matrix groups, Cayley-Hamilton, binary operation, group axioms.  <p><img src=\"/database/db/89/89-S3-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1989 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/89/89-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/89/89-S3.tex\"></a></p> "
},
{
 "tags": ["Curve sketching"],
 "question_id":89304,
 "title": "89-S3-Q4",
 "body": "Asymptotes, turning points, roots of equations, C1.  <p><img src=\"/database/db/89/89-S3-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1989 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/89/89-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/89/89-S3.tex\"></a></p> "
},
{
 "tags": ["Hyperbolic functions"],
 "question_id":89305,
 "title": "89-S3-Q5",
 "body": "Sum, series, polynomial, Chebyshev's polynomial (hyperbolic).  <p><img src=\"/database/db/89/89-S3-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1989 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/89/89-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/89/89-S3.tex\"></a></p> "
},
{
 "tags": ["Polar coordinates"],
 "question_id":89306,
 "title": "89-S3-Q6",
 "body": "Conic section, tangent, intersection, bisection.  <p><img src=\"/database/db/89/89-S3-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1989 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/89/89-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/89/89-S3.tex\"></a></p> "
},
{
 "tags": ["Transformation"],
 "question_id":89307,
 "title": "89-S3-Q7",
 "body": "Linear transformation, matrix, necessary ans sufficient, commute.  <p><img src=\"/database/db/89/89-S3-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1989 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/89/89-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/89/89-S3.tex\"></a></p> "
},
{
 "tags": ["Differential equation"],
 "question_id":89308,
 "title": "89-S3-Q8",
 "body": "System of first order equation, exponential function.  <p><img src=\"/database/db/89/89-S3-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1989 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/89/89-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/89/89-S3.tex\"></a></p> "
},
{
 "tags": ["Infinite series"],
 "question_id":89309,
 "title": "89-S3-Q9",
 "body": "Sum, sequences, infinite.  <p><img src=\"/database/db/89/89-S3-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1989 Question 9 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/89/89-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/89/89-S3.tex\"></a></p> "
},
{
 "tags": ["Riemann integration"],
 "question_id":89310,
 "title": "89-S3-Q10",
 "body": "Sum of powers, inequality, limit, increasing function, rigorous proof of integration of polynomials.  <p><img src=\"/database/db/89/89-S3-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1989 Question 10 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/89/89-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/89/89-S3.tex\"></a></p> "
},
{
 "tags": ["Collision"],
 "question_id":89311,
 "title": "89-S3-Q11",
 "body": "Coefficient of restitution, spheres, strike, rigid rod.  <p><img src=\"/database/db/89/89-S3-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1989 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/89/89-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/89/89-S3.tex\"></a></p> "
},
{
 "tags": ["Circular motion"],
 "question_id":89312,
 "title": "89-S3-Q12",
 "body": "Vertical axis.  <p><img src=\"/database/db/89/89-S3-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1989 Question 12 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/89/89-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/89/89-S3.tex\"></a></p> "
},
{
 "tags": ["SHM"],
 "question_id":89313,
 "title": "89-S3-Q13",
 "body": "Elastic strings, modulus of elasticity, Hooke's law, simple harmonic motion, equilibrium.  <p><img src=\"/database/db/89/89-S3-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1989 Question 13 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/89/89-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/89/89-S3.tex\"></a></p> "
},
{
 "tags": ["Moment of inertia"],
 "question_id":89314,
 "title": "89-S3-Q14",
 "body": "Circular disc, minelastic string, pulley.  <p><img src=\"/database/db/89/89-S3-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1989 Question 14 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/89/89-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/89/89-S3.tex\"></a></p> "
},
{
 "tags": ["Uniform distribution"],
 "question_id":89315,
 "title": "89-S3-Q15",
 "body": "Continuous random variable, independent, probability density function, pdf, median, integration, expectation, variance.  <p><img src=\"/database/db/89/89-S3-Q15.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1989 Question 15 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/89/89-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/89/89-S3.tex\"></a></p> "
},
{
 "tags": ["Elementary probability"],
 "question_id":89316,
 "title": "89-S3-Q16",
 "body": "Ruritania, tree diagram, C1.  <p><img src=\"/database/db/89/89-S3-Q16.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1989 Question 16 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/89/89-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/89/89-S3.tex\"></a></p> "
},
{
 "tags": ["Euclidean geometry"],
 "question_id":90101,
 "title": "90-S1-Q1",
 "body": "Semicircle, quadrilateral, blind, maximum area, C1.  <p><img src=\"/database/db/90/90-S1-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1990 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/90/90-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/90/90-S1.tex\"></a></p> "
},
{
 "tags": ["Binomial coefficient"],
 "question_id":90102,
 "title": "90-S1-Q2",
 "body": "Complex numbers, modulus and argument, roots of unity, binomial expansion, sum.  <p><img src=\"/database/db/90/90-S1-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1990 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/90/90-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/90/90-S1.tex\"></a></p> "
},
{
 "tags": ["Curves"],
 "question_id":90103,
 "title": "90-S1-Q3",
 "body": "Push-off, normal, position vector, gradient.  <p><img src=\"/database/db/90/90-S1-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1990 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/90/90-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/90/90-S1.tex\"></a></p> "
},
{
 "tags": ["Progressions"],
 "question_id":90104,
 "title": "90-S1-Q4",
 "body": "Arithmetic, double arithmetic, factorial progression, sequence, sum, C1.  <p><img src=\"/database/db/90/90-S1-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1990 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/90/90-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/90/90-S1.tex\"></a></p> "
},
{
 "tags": ["Integral,","Curve sketching"],
 "question_id":90105,
 "title": "90-S1-Q5",
 "body": "Integration by substitution, curve sketching, polynomial, distinct roots, inequality.  <p><img src=\"/database/db/90/90-S1-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1990 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/90/90-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/90/90-S1.tex\"></a></p> "
},
{
 "tags": ["Vector geometry"],
 "question_id":90106,
 "title": "90-S1-Q6",
 "body": "Parallelogram, area of rectangle, projection, diagonals.  <p><img src=\"/database/db/90/90-S1-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1990 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/90/90-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/90/90-S1.tex\"></a></p> "
},
{
 "tags": ["Differential equations"],
 "question_id":90107,
 "title": "90-S1-Q7",
 "body": "Substitution, first order equation.  <p><img src=\"/database/db/90/90-S1-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1990 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/90/90-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/90/90-S1.tex\"></a></p> "
},
{
 "tags": ["Infinite product"],
 "question_id":90108,
 "title": "90-S1-Q8",
 "body": "Trigonometry, sine, cosine function.  <p><img src=\"/database/db/90/90-S1-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1990 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/90/90-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/90/90-S1.tex\"></a></p> "
},
{
 "tags": ["Coordinate geometry"],
 "question_id":90109,
 "title": "90-S1-Q9",
 "body": "Curve, intersection, projection, area of quadrilaterals, inequality, C1.  <p><img src=\"/database/db/90/90-S1-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1990 Question 9 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/90/90-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/90/90-S1.tex\"></a></p> "
},
{
 "tags": ["Time-distance"],
 "question_id":90110,
 "title": "90-S1-Q10",
 "body": "Work, energy and power, relative velocity.  <p><img src=\"/database/db/90/90-S1-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1990 Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/90/90-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/90/90-S1.tex\"></a></p> "
},
{
 "tags": ["Projectile motion"],
 "question_id":90111,
 "title": "90-S1-Q11",
 "body": "Superman, shell, downward velocity.  <p><img src=\"/database/db/90/90-S1-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1990 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/90/90-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/90/90-S1.tex\"></a></p> "
},
{
 "tags": ["Hooke's law"],
 "question_id":90112,
 "title": "90-S1-Q12",
 "body": "Spring, modulus of elasticity, equilibrium, potential energy.  <p><img src=\"/database/db/90/90-S1-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1990 Question 12 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/90/90-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/90/90-S1.tex\"></a></p> "
},
{
 "tags": ["Friction"],
 "question_id":90113,
 "title": "90-S1-Q13",
 "body": "Cylinder, coefficient of friction, inequality, normal reaction, smooth rail.  <p><img src=\"/database/db/90/90-S1-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1990 Question 13 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/90/90-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/90/90-S1.tex\"></a></p> "
},
{
 "tags": ["Expectation"],
 "question_id":90114,
 "title": "90-S1-Q14",
 "body": "Bag of balls, Blackball, expectation, strategy.  <p><img src=\"/database/db/90/90-S1-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1990 Question 14 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/90/90-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/90/90-S1.tex\"></a></p> "
},
{
 "tags": ["Coin toss"],
 "question_id":90115,
 "title": "90-S1-Q15",
 "body": "Binomial coefficient, combinatorics, probability, tosses, C1.  <p><img src=\"/database/db/90/90-S1-Q15.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1990 Question 15 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/90/90-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/90/90-S1.tex\"></a></p> "
},
{
 "tags": ["Pdf"],
 "question_id":90116,
 "title": "90-S1-Q16",
 "body": "Probability density function, Poisson distribution, bus, stop.  <p><img src=\"/database/db/90/90-S1-Q16.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1990 Question 16 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/90/90-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/90/90-S1.tex\"></a></p> "
},
{
 "tags": ["Polynomial equation"],
 "question_id":90201,
 "title": "90-S2-Q1",
 "body": "Algebra, roots of equations, ineqlaity, non-negative, C1.  <p><img src=\"/database/db/90/90-S2-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1990 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/90/90-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/90/90-S2.tex\"></a></p> "
},
{
 "tags": ["Polynomial equation"],
 "question_id":90201,
 "title": "90-S2-Q1",
 "body": "Algebra, roots of equations, ineqlaity, non-negative, C1.  <p><img src=\"/database/db/90/90-S2-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1990 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/90/90-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/90/90-S2.tex\"></a></p> "
},
{
 "tags": ["Polynomial equation"],
 "question_id":90201,
 "title": "90-S2-Q1",
 "body": "Algebra, roots of equations, ineqlaity, non-negative, C1.  <p><img src=\"/database/db/90/90-S2-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1990 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/90/90-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/90/90-S2.tex\"></a></p> "
},
{
 "tags": ["Trigonometry"],
 "question_id":90202,
 "title": "90-S2-Q2",
 "body": "Sine function, circle, geometry.  <p><img src=\"/database/db/90/90-S2-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1990 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/90/90-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/90/90-S2.tex\"></a></p> "
},
{
 "tags": ["Curve sketching"],
 "question_id":90203,
 "title": "90-S2-Q3",
 "body": "Cubic equation, cases, inequality, C1.  <p><img src=\"/database/db/90/90-S2-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1990 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/90/90-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/90/90-S2.tex\"></a></p> "
},
{
 "tags": ["Elementary geometry"],
 "question_id":90204,
 "title": "90-S2-Q4",
 "body": "Proof by induction, plane, lines, intersection, line segments, C1.  <p><img src=\"/database/db/90/90-S2-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1990 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/90/90-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/90/90-S2.tex\"></a></p> "
},
{
 "tags": ["Complex numbers"],
 "question_id":90205,
 "title": "90-S2-Q5",
 "body": "Geometry, circle, argand diagram, position.  <p><img src=\"/database/db/90/90-S2-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1990 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/90/90-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/90/90-S2.tex\"></a></p> "
},
{
 "tags": ["Inequality"],
 "question_id":90206,
 "title": "90-S2-Q6",
 "body": "Positive integers, fractions, C1.  <p><img src=\"/database/db/90/90-S2-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1990 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/90/90-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/90/90-S2.tex\"></a></p> "
},
{
 "tags": ["Differential equations"],
 "question_id":90207,
 "title": "90-S2-Q7",
 "body": "Damped system with feedback, exponential function, curve sketching, root of equations, first order equation.  <p><img src=\"/database/db/90/90-S2-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1990 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/90/90-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/90/90-S2.tex\"></a></p> "
},
{
 "tags": ["Integration by parts"],
 "question_id":90208,
 "title": "90-S2-Q8",
 "body": "Identity.  <p><img src=\"/database/db/90/90-S2-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1990 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/90/90-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/90/90-S2.tex\"></a></p> "
},
{
 "tags": ["Polar coordinates"],
 "question_id":90209,
 "title": "90-S2-Q9",
 "body": "Curve sketching, cardioid, length of curve.  <p><img src=\"/database/db/90/90-S2-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1990 Question 9 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/90/90-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/90/90-S2.tex\"></a></p> "
},
{
 "tags": ["Matrices"],
 "question_id":90210,
 "title": "90-S2-Q10",
 "body": "Determinants, Cayley-Hamilton theorem, necessary and sufficient, counterexamples.  <p><img src=\"/database/db/90/90-S2-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1990 Question 10 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/90/90-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/90/90-S2.tex\"></a></p> "
},
{
 "tags": ["Circular motion"],
 "question_id":90211,
 "title": "90-S2-Q11",
 "body": "Disc spinning about vertical axis, moment of inertia, first order equation, integration by substitution.  <p><img src=\"/database/db/90/90-S2-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1990 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/90/90-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/90/90-S2.tex\"></a></p> "
},
{
 "tags": ["Collision"],
 "question_id":90212,
 "title": "90-S2-Q12",
 "body": "Coefficient of restitution, straight staircase, edge.  <p><img src=\"/database/db/90/90-S2-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1990 Question 12 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/90/90-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/90/90-S2.tex\"></a></p> "
},
{
 "tags": ["Equilibrium"],
 "question_id":90213,
 "title": "90-S2-Q13",
 "body": "Centre of gravity, non-uniform rod, light inextensible string.  <p><img src=\"/database/db/90/90-S2-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1990 Question 13 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/90/90-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/90/90-S2.tex\"></a></p> "
},
{
 "tags": ["Collision"],
 "question_id":90214,
 "title": "90-S2-Q14",
 "body": "Kinetic energy, identical smooth marbles.  <p><img src=\"/database/db/90/90-S2-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1990 Question 14 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/90/90-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/90/90-S2.tex\"></a></p> "
},
{
 "tags": ["Pdf"],
 "question_id":90215,
 "title": "90-S2-Q15",
 "body": "Probability density function, expectation, taget, shot, marksman.  <p><img src=\"/database/db/90/90-S2-Q15.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1990 Question 15 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/90/90-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/90/90-S2.tex\"></a></p> "
},
{
 "tags": ["Tree diagram"],
 "question_id":90216,
 "title": "90-S2-Q16",
 "body": "Trousers, ties and compromising photographs, elementary probability, C1.  <p><img src=\"/database/db/90/90-S2-Q16.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1990 Question 16 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/90/90-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/90/90-S2.tex\"></a></p> "
},
{
 "tags": ["Complex numbers"],
 "question_id":90301,
 "title": "90-S3-Q1",
 "body": "de Moivre's theorem, trigonometry, roots of equation, tangent function.  <p><img src=\"/database/db/90/90-S3-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1990 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/90/90-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/90/90-S3.tex\"></a></p> "
},
{
 "tags": ["Coordinate geometry"],
 "question_id":90302,
 "title": "90-S3-Q2",
 "body": "3-dimensional space, line, intersection, angle, C1.  <p><img src=\"/database/db/90/90-S3-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1990 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/90/90-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/90/90-S3.tex\"></a></p> "
},
{
 "tags": ["Groups"],
 "question_id":90303,
 "title": "90-S3-Q3",
 "body": "Binary operation, order 2, commute, conjugate elements.  <p><img src=\"/database/db/90/90-S3-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1990 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/90/90-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/90/90-S3.tex\"></a></p> "
},
{
 "tags": ["Trigonometry"],
 "question_id":90304,
 "title": "90-S3-Q4",
 "body": "Sum of trigonometric functions, cosine, binomial coefficient.  <p><img src=\"/database/db/90/90-S3-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1990 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/90/90-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/90/90-S3.tex\"></a></p> "
},
{
 "tags": ["Proof by induction"],
 "question_id":90305,
 "title": "90-S3-Q5",
 "body": "Binomial coefficient, differential equations, arcsin function, Leibniz's rule.  <p><img src=\"/database/db/90/90-S3-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1990 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/90/90-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/90/90-S3.tex\"></a></p> "
},
{
 "tags": ["Transformation"],
 "question_id":90306,
 "title": "90-S3-Q6",
 "body": "Vectors, matrices, eigenvectors, area, equation of tangent, circle.  <p><img src=\"/database/db/90/90-S3-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1990 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/90/90-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/90/90-S3.tex\"></a></p> "
},
{
 "tags": ["Curve sketching"],
 "question_id":90307,
 "title": "90-S3-Q7",
 "body": "Taylor series, curve sketching, inequality, asymptote.  <p><img src=\"/database/db/90/90-S3-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1990 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/90/90-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/90/90-S3.tex\"></a></p> "
},
{
 "tags": ["Differential equation"],
 "question_id":90308,
 "title": "90-S3-Q8",
 "body": "Second order equation, integrating factor.  <p><img src=\"/database/db/90/90-S3-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1990 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/90/90-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/90/90-S3.tex\"></a></p> "
},
{
 "tags": ["Polar coordinates"],
 "question_id":90309,
 "title": "90-S3-Q9",
 "body": "Polar differential equations, hyperbolic and trigonometric functions.  <p><img src=\"/database/db/90/90-S3-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1990 Question 9 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/90/90-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/90/90-S3.tex\"></a></p> "
},
{
 "tags": ["Roots of equations"],
 "question_id":90310,
 "title": "90-S3-Q10",
 "body": "Curve sketching, interval, inequality, estimation, approximation, C1.  <p><img src=\"/database/db/90/90-S3-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1990 Question 10 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/90/90-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/90/90-S3.tex\"></a></p> "
},
{
 "tags": ["Equilibrium"],
 "question_id":90311,
 "title": "90-S3-Q11",
 "body": "Uniform square lamina, revolution about axis, rotation.  <p><img src=\"/database/db/90/90-S3-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1990 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/90/90-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/90/90-S3.tex\"></a></p> "
},
{
 "tags": ["Equilibrium"],
 "question_id":90312,
 "title": "90-S3-Q12",
 "body": "Smooth wedge, particle, elastic collision.  <p><img src=\"/database/db/90/90-S3-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1990 Question 12 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/90/90-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/90/90-S3.tex\"></a></p> "
},
{
 "tags": ["Projectile motion"],
 "question_id":90313,
 "title": "90-S3-Q13",
 "body": "Projection from sphere, strike surface.  <p><img src=\"/database/db/90/90-S3-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1990 Question 13 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/90/90-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/90/90-S3.tex\"></a></p> "
},
{
 "tags": ["Work done"],
 "question_id":90314,
 "title": "90-S3-Q14",
 "body": "Rigid cube, moment, force.  <p><img src=\"/database/db/90/90-S3-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1990 Question 14 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/90/90-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/90/90-S3.tex\"></a></p> "
},
{
 "tags": ["Discrete random variables"],
 "question_id":90315,
 "title": "90-S3-Q15",
 "body": "Marginal distribution, mean, expectation, probability, unbiased 12-sided die, dice.  <p><img src=\"/database/db/90/90-S3-Q15.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1990 Question 15 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/90/90-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/90/90-S3.tex\"></a></p> "
},
{
 "tags": ["Normal and Uniform distribution"],
 "question_id":90316,
 "title": "90-S3-Q16",
 "body": "Rod cut into pieces, conditional probability, triangle formed, bivariate distribution, construction possible, obtuse angle.  <p><img src=\"/database/db/90/90-S3-Q16.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1990 Question 16 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/90/90-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/90/90-S3.tex\"></a></p> "
},
{
 "tags": ["Trigonometry"],
 "question_id":91101,
 "title": "91-S1-Q1",
 "body": "Cubic equation.  <p><img src=\"/database/db/91/91-S1-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1991 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/91/91-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/91/91-S1.tex\"></a></p> "
},
{
 "tags": ["Differentiation"],
 "question_id":91102,
 "title": "91-S1-Q2",
 "body": "Frosty the snowman, melting, ratio of volume, surface area, maximum value, C1.  <p><img src=\"/database/db/91/91-S1-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1991 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/91/91-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/91/91-S1.tex\"></a></p> "
},
{
 "tags": ["Complex number"],
 "question_id":91103,
 "title": "91-S1-Q3",
 "body": "Argand diagram, path.  <p><img src=\"/database/db/91/91-S1-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1991 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/91/91-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/91/91-S1.tex\"></a></p> "
},
{
 "tags": ["Differentiation"],
 "question_id":91104,
 "title": "91-S1-Q4",
 "body": "Prison compound, square, Black Tower, distance, area, maximum value, C1.  <p><img src=\"/database/db/91/91-S1-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1991 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/91/91-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/91/91-S1.tex\"></a></p> "
},
{
 "tags": ["Vectors"],
 "question_id":91105,
 "title": "91-S1-Q5",
 "body": "Regular vectors, centroid.  <p><img src=\"/database/db/91/91-S1-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1991 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/91/91-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/91/91-S1.tex\"></a></p> "
},
{
 "tags": ["Proof"],
 "question_id":91106,
 "title": "91-S1-Q6",
 "body": "Differentiation, integration, criticise argument, maximum, minimum, C1.  <p><img src=\"/database/db/91/91-S1-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1991 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/91/91-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/91/91-S1.tex\"></a></p> "
},
{
 "tags": ["Geometric progression"],
 "question_id":91107,
 "title": "91-S1-Q7",
 "body": "Slakan Treasury, Economics, continuous variable, vloskan, interest, sequence, inequality, C1.  <p><img src=\"/database/db/91/91-S1-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1991 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/91/91-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/91/91-S1.tex\"></a></p> "
},
{
 "tags": ["Integration by substitution"],
 "question_id":91108,
 "title": "91-S1-Q8",
 "body": "Trigonometric integral, sin substitution, arcsin function.  <p><img src=\"/database/db/91/91-S1-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1991 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/91/91-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/91/91-S1.tex\"></a></p> "
},
{
 "tags": ["Analysis"],
 "question_id":92010,
 "title": "91-S1-Q9",
 "body": "Sum, inequality, approximation, analysis, C1.  <p><img src=\"/database/db/91/91-S1-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1991 Question 9 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/91/91-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/91/91-S1.tex\"></a></p> "
},
{
 "tags": ["Equilibrium"],
 "question_id":91110,
 "title": "91-S1-Q10",
 "body": "Suspension bridge, flexible chains, weight, tension, parabola.  <p><img src=\"/database/db/91/91-S1-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1991 Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/91/91-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/91/91-S1.tex\"></a></p> "
},
{
 "tags": ["Pulley"],
 "question_id":91111,
 "title": "91-S1-Q11",
 "body": "Piledriver, acceleration, collision, geometric progression, inelastic.  <p><img src=\"/database/db/91/91-S1-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1991 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/91/91-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/91/91-S1.tex\"></a></p> "
},
{
 "tags": ["Friction"],
 "question_id":91112,
 "title": "91-S1-Q12",
 "body": "Makeshift stepladder, coefficient of friction.  <p><img src=\"/database/db/91/91-S1-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1991 Question 12 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/91/91-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/91/91-S1.tex\"></a></p> "
},
{
 "tags": ["Equilibrium"],
 "question_id":91113,
 "title": "91-S1-Q13",
 "body": "Lamina, slide, semicircle, speed. <p><img src=\"/database/db/91/91-S1-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1991 Question 13 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/91/91-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/91/91-S1.tex\"></a></p> "
},
{
 "tags": ["Elementary probability"],
 "question_id":91114,
 "title": "91-S1-Q14",
 "body": "Rod, triangle, non-degenerate, without replacement, C1.  <p><img src=\"/database/db/91/91-S1-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1991 Question 14 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/91/91-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/91/91-S1.tex\"></a></p> "
},
{
 "tags": ["Coin toss"],
 "question_id":91115,
 "title": "91-S1-Q15",
 "body": "Binomial distribution, probability, mean and variance.  <p><img src=\"/database/db/91/91-S1-Q15.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1991 Question 15 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/91/91-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/91/91-S1.tex\"></a></p> "
},
{
 "tags": ["Probability"],
 "question_id":91116,
 "title": "91-S1-Q16",
 "body": "Toad and frog cross the road, probability.  <p><img src=\"/database/db/91/91-S1-Q16.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1991 Question 16 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/91/91-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/91/91-S1.tex\"></a></p> "
},
{
 "tags": ["Quadratic equations"],
 "question_id":91201,
 "title": "91-S2-Q1",
 "body": "Linear combination, algebra, C1.  <p><img src=\"/database/db/91/91-S2-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1991 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/91/91-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/91/91-S2.tex\"></a></p> "
},
{
 "tags": ["Conic sections"],
 "question_id":91202,
 "title": "91-S2-Q2",
 "body": "Hyperbola, curves, differentiation, equation of tangent, asymptote, bisect angles.  <p><img src=\"/database/db/91/91-S2-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1991 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/91/91-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/91/91-S2.tex\"></a></p> "
},
{
 "tags": ["Functions"],
 "question_id":91203,
 "title": "91-S2-Q3",
 "body": "Algebraic manipulation, C1.  <p><img src=\"/database/db/91/91-S2-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1991 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/91/91-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/91/91-S2.tex\"></a></p> "
},
{
 "tags": ["Trigonometry"],
 "question_id":91204,
 "title": "91-S2-Q4",
 "body": "Sum, quadratic equation, cosine function.  <p><img src=\"/database/db/91/91-S2-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1991 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/91/91-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/91/91-S2.tex\"></a></p> "
},
{
 "tags": ["Integration"],
 "question_id":91205,
 "title": "91-S2-Q5",
 "body": "Analysis, curve sketching, tangent function, sum, logarithm function.  <p><img src=\"/database/db/91/91-S2-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1991 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/91/91-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/91/91-S2.tex\"></a></p> "
},
{
 "tags": ["Inequality"],
 "question_id":91206,
 "title": "91-S2-Q6",
 "body": "Integration, approximation, Taylor series.  <p><img src=\"/database/db/91/91-S2-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1991 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/91/91-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/91/91-S2.tex\"></a></p> "
},
{
 "tags": ["Functions"],
 "question_id":91207,
 "title": "91-S2-Q7",
 "body": "Differentiation, logarithmic function, functional equations.  <p><img src=\"/database/db/91/91-S2-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1991 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/91/91-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/91/91-S2.tex\"></a></p> "
},
{
 "tags": ["Differential equations"],
 "question_id":91208,
 "title": "91-S2-Q8",
 "body": "Quadratic equations, hyperbolic functions, substitution.  <p><img src=\"/database/db/91/91-S2-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1991 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/91/91-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/91/91-S2.tex\"></a></p> "
},
{
 "tags": ["Groups"],
 "question_id":91209,
 "title": "91-S2-Q9",
 "body": "Groups under matrix multiplication, commute, subgroup.  <p><img src=\"/database/db/91/91-S2-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1991 Question 9 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/91/91-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/91/91-S2.tex\"></a></p> "
},
{
 "tags": ["Spherical polar coordinates"],
 "question_id":91210,
 "title": "91-S2-Q10",
 "body": "Straight stick, shadow, displacement vector.  <p><img src=\"/database/db/91/91-S2-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1991 Question 10 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/91/91-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/91/91-S2.tex\"></a></p> "
},
{
 "tags": ["Projectile motion"],
 "question_id":91211,
 "title": "91-S2-Q11",
 "body": "Ruritanian army, shells, maximum height, angle of elevation.  <p><img src=\"/database/db/91/91-S2-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1991 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/91/91-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/91/91-S2.tex\"></a></p> "
},
{
 "tags": ["Hooke's law"],
 "question_id":91212,
 "title": "91-S2-Q12",
 "body": "String, second order differential equation, necessary and sufficient.  <p><img src=\"/database/db/91/91-S2-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1991 Question 12 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/91/91-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/91/91-S2.tex\"></a></p> "
},
{
 "tags": ["Friction"],
 "question_id":91213,
 "title": "91-S2-Q13",
 "body": "Uniform rod, moment of inertia, coefficient of friction.  <p><img src=\"/database/db/91/91-S2-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1991 Question 13 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/91/91-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/91/91-S2.tex\"></a></p> "
},
{
 "tags": ["Velocity"],
 "question_id":91214,
 "title": "91-S2-Q14",
 "body": "Current in a river, vector, first order differential equation, hyperbolic, exponential functions.  <p><img src=\"/database/db/91/91-S2-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1991 Question 14 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/91/91-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/91/91-S2.tex\"></a></p> "
},
{
 "tags": ["Elementary probability"],
 "question_id":91215,
 "title": "91-S2-Q15",
 "body": "Expectation, combinatorics, desk, examination hall, invigilator.  <p><img src=\"/database/db/91/91-S2-Q15.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1991 Question 15 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/91/91-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/91/91-S2.tex\"></a></p> "
},
{
 "tags": ["Uniform distribution"],
 "question_id":91216,
 "title": "91-S2-Q16",
 "body": "Cabbibo dam, rain, approximation.  <p><img src=\"/database/db/91/91-S2-Q16.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1991 Question 16 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/91/91-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/91/91-S2.tex\"></a></p> "
},
{
 "tags": ["Taylor series"],
 "question_id":91301,
 "title": "91-S3-Q1",
 "body": "Sum, logarithm, exponential function.  <p><img src=\"/database/db/91/91-S3-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1991 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/91/91-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/91/91-S3.tex\"></a></p> "
},
{
 "tags": ["Complex numbers"],
 "question_id":91302,
 "title": "91-S3-Q2",
 "body": "Argand diagram, triangles, rotation, deterinant of matrix, similar triangles, centroid, equilateral, geometry.  <p><img src=\"/database/db/91/91-S3-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1991 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/91/91-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/91/91-S3.tex\"></a></p> "
},
{
 "tags": ["Modulus function"],
 "question_id":91303,
 "title": "91-S3-Q3",
 "body": "Differentiation, stationary, inflection points, continuous and differentiable, inverse function, C1.  <p><img src=\"/database/db/91/91-S3-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1991 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/91/91-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/91/91-S3.tex\"></a></p> "
},
{
 "tags": ["Coordinate geometry"],
 "question_id":91304,
 "title": "91-S3-Q4",
 "body": "3-dimensional space, position vector, equation of path.  <p><img src=\"/database/db/91/91-S3-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1991 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/91/91-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/91/91-S3.tex\"></a></p> "
},
{
 "tags": ["Differential equations"],
 "question_id":91305,
 "title": "91-S3-Q5",
 "body": "Polar coordinates, integration, closed loop, area of region.  <p><img src=\"/database/db/91/91-S3-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1991 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/91/91-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/91/91-S3.tex\"></a></p> "
},
{
 "tags": ["Transformation"],
 "question_id":91306,
 "title": "91-S3-Q6",
 "body": "Equation of lines, hyperbolic functions, necessary and sufficient.  <p><img src=\"/database/db/91/91-S3-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1991 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/91/91-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/91/91-S3.tex\"></a></p> "
},
{
 "tags": ["Integration"],
 "question_id":91307,
 "title": "91-S3-Q7",
 "body": "Logarithm, trigonometry, analysis, inequality, limits.  <p><img src=\"/database/db/91/91-S3-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1991 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/91/91-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/91/91-S3.tex\"></a></p> "
},
{
 "tags": ["Sum"],
 "question_id":91308,
 "title": "91-S3-Q8",
 "body": "Integration by parts, reccurence formula, binomial coefficient.  <p><img src=\"/database/db/91/91-S3-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1991 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/91/91-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/91/91-S3.tex\"></a></p> "
},
{
 "tags": ["Conic sections"],
 "question_id":91309,
 "title": "91-S3-Q9",
 "body": "Parametric equations, ellipse, polar equation, perimeter, integration.  <p><img src=\"/database/db/91/91-S3-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1991 Question 9 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/91/91-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/91/91-S3.tex\"></a></p> "
},
{
 "tags": ["Roots of polynomials"],
 "question_id":91310,
 "title": "91-S3-Q10",
 "body": "Sum of roots, proof by induction.  <p><img src=\"/database/db/91/91-S3-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1991 Question 10 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/91/91-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/91/91-S3.tex\"></a></p> "
},
{
 "tags": ["Friction"],
 "question_id":91311,
 "title": "91-S3-Q11",
 "body": "Uniform circular cylinder on inclined plane, coefficient of friction.  <p><img src=\"/database/db/91/91-S3-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1991 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/91/91-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/91/91-S3.tex\"></a></p> "
},
{
 "tags": ["Projectile motion"],
 "question_id":91312,
 "title": "91-S3-Q12",
 "body": "Elliptic tube, acceleration, polar coordinates.  <p><img src=\"/database/db/91/91-S3-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1991 Question 12 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/91/91-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/91/91-S3.tex\"></a></p> "
},
{
 "tags": ["Collision"],
 "question_id":91313,
 "title": "91-S3-Q13",
 "body": "Ceiling, perfectly inelastic collision.  <p><img src=\"/database/db/91/91-S3-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1991 Question 13 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/91/91-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/91/91-S3.tex\"></a></p> "
},
{
 "tags": ["Hooke's law"],
 "question_id":91314,
 "title": "91-S3-Q14",
 "body": "Modulus of elasticity, spring, reaction force.  <p><img src=\"/database/db/91/91-S3-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1991 Question 14 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/91/91-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/91/91-S3.tex\"></a></p> "
},
{
 "tags": ["Combinatorics"],
 "question_id":91315,
 "title": "91-S3-Q15",
 "body": "Pack of cards, without replacement, identical, elementary probabliity.  <p><img src=\"/database/db/91/91-S3-Q15.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1991 Question 15 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/91/91-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/91/91-S3.tex\"></a></p> "
},
{
 "tags": ["Discrete random variable"],
 "question_id":91316,
 "title": "91-S3-Q16",
 "body": "Joint probability distribution, marginal probability, expectation.  <p><img src=\"/database/db/91/91-S3-Q16.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1991 Question 16 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/91/91-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/91/91-S3.tex\"></a></p> "
},
{
 "tags": ["Counting"],
 "question_id":92101,
 "title": "92-S1-Q1",
 "body": "Date of the week, methodical, C1.  <p><img src=\"/database/db/92/92-S1-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1992 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/92/92-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/92/92-S1.tex\"></a></p> "
},
{
 "tags": ["Magic square"],
 "question_id":92102,
 "title": "92-S1-Q2",
 "body": "C1.  <p><img src=\"/database/db/92/92-S1-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1992 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/92/92-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/92/92-S1.tex\"></a></p> "
},
{
 "tags": ["Integral"],
 "question_id":92103,
 "title": "92-S1-Q3",
 "body": "Sine and modulus function, integration by parts.  <p><img src=\"/database/db/92/92-S1-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1992 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/92/92-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/92/92-S1.tex\"></a></p> "
},
{
 "tags": ["Complex number"],
 "question_id":92104,
 "title": "92-S1-Q4",
 "body": "Argand diagram, locus.  <p><img src=\"/database/db/92/92-S1-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1992 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/92/92-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/92/92-S1.tex\"></a></p> "
},
{
 "tags": ["Polynomial factors"],
 "question_id":92105,
 "title": "92-S1-Q5",
 "body": "Differentiation, C1.  <p><img src=\"/database/db/92/92-S1-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1992 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/92/92-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/92/92-S1.tex\"></a></p> "
},
{
 "tags": ["Approximation"],
 "question_id":92106,
 "title": "92-S1-Q6",
 "body": "Small angle approximation, C1.  <p><img src=\"/database/db/92/92-S1-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1992 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/92/92-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/92/92-S1.tex\"></a></p> "
},
{
 "tags": ["Functions"],
 "question_id":92107,
 "title": "92-S1-Q7",
 "body": "Quadratic equation, functional equation, integer, C1.  <p><img src=\"/database/db/92/92-S1-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1992 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/92/92-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/92/92-S1.tex\"></a></p> "
},
{
 "tags": ["Derivative of an integral"],
 "question_id":92108,
 "title": "92-S1-Q8",
 "body": "Differentiation, integration, exponential function.  <p><img src=\"/database/db/92/92-S1-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1992 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/92/92-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/92/92-S1.tex\"></a></p> "
},
{
 "tags": ["Differentiation"],
 "question_id":92109,
 "title": "92-S1-Q9",
 "body": "Coffee filter, cone, height of water, C1.  <p><img src=\"/database/db/92/92-S1-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1992 Question 9 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/92/92-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/92/92-S1.tex\"></a></p> "
},
{
 "tags": ["Projectile motion"],
 "question_id":92110,
 "title": "92-S1-Q10",
 "body": "Toy cannon, force exerted on projectile.  <p><img src=\"/database/db/92/92-S1-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1992 Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/92/92-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/92/92-S1.tex\"></a></p> "
},
{
 "tags": ["Elastic strings"],
 "question_id":92111,
 "title": "92-S1-Q11",
 "body": "Modulus of elasticity.  <p><img src=\"/database/db/92/92-S1-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1992 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/92/92-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/92/92-S1.tex\"></a></p> "
},
{
 "tags": ["Friction"],
 "question_id":92112,
 "title": "92-S1-Q12",
 "body": "Stepladder, coefficient of friction, equilibrium.  <p><img src=\"/database/db/92/92-S1-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1992 Question 12 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/92/92-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/92/92-S1.tex\"></a></p> "
},
{
 "tags": ["Gravitational attraction"],
 "question_id":92113,
 "title": "92-S1-Q13",
 "body": "Inverse square law, comet, escape velocity. <p><img src=\"/database/db/92/92-S1-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1992 Question 13 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/92/92-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/92/92-S1.tex\"></a></p> "
},
{
 "tags": ["Statistics"],
 "question_id":92114,
 "title": "92-S1-Q14",
 "body": "Pedestrains, Poldavia, newspaper headlines, C1.  <p><img src=\"/database/db/92/92-S1-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1992 Question 14 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/92/92-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/92/92-S1.tex\"></a></p> "
},
{
 "tags": ["Graphical probability"],
 "question_id":92115,
 "title": "92-S1-Q15",
 "body": "Trains, London, Barchester, C1.  <p><img src=\"/database/db/92/92-S1-Q15.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1992 Question 15 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/92/92-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/92/92-S1.tex\"></a></p> "
},
{
 "tags": ["Elementary probability"],
 "question_id":92116,
 "title": "92-S1-Q16",
 "body": "Closure of roads, binomial distribution, C1.  <p><img src=\"/database/db/92/92-S1-Q16.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1992 Question 16 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/92/92-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/92/92-S1.tex\"></a></p> "
},
{
 "tags": ["Limits"],
 "question_id":92201,
 "title": "92-S2-Q1",
 "body": "Functions, trigonometry, square roots.  <p><img src=\"/database/db/92/92-S2-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1992 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/92/92-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/92/92-S2.tex\"></a></p> "
},
{
 "tags": ["Differential equations"],
 "question_id":92202,
 "title": "92-S2-Q2",
 "body": "Second order equation, differentiation, hyperbolic functions.  <p><img src=\"/database/db/92/92-S2-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1992 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/92/92-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/92/92-S2.tex\"></a></p> "
},
{
 "tags": ["Polar coordinates"],
 "question_id":92203,
 "title": "92-S2-Q3",
 "body": "Curve sketching, integration, area of region.  <p><img src=\"/database/db/92/92-S2-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1992 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/92/92-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/92/92-S2.tex\"></a></p> "
},
{
 "tags": ["Diamond derivative"],
 "question_id":92204,
 "title": "92-S2-Q4",
 "body": "Functional equation, differentiation, polynomial, C1.  <p><img src=\"/database/db/92/92-S2-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1992 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/92/92-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/92/92-S2.tex\"></a></p> "
},
{
 "tags": ["Groups"],
 "question_id":92205,
 "title": "92-S2-Q5",
 "body": "Order of an element, SL2(R), inverse, matrix multiplication.  <p><img src=\"/database/db/92/92-S2-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1992 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/92/92-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/92/92-S2.tex\"></a></p> "
},
{
 "tags": ["Curve sketching"],
 "question_id":92206,
 "title": "92-S2-Q6",
 "body": "Trigonometry, logarithm, root of equation, approximation.  <p><img src=\"/database/db/92/92-S2-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1992 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/92/92-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/92/92-S2.tex\"></a></p> "
},
{
 "tags": ["Cubic equation"],
 "question_id":92207,
 "title": "92-S2-Q7",
 "body": "Differentiation, logarithmic function, functional equations.  <p><img src=\"/database/db/92/92-S2-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1992 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/92/92-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/92/92-S2.tex\"></a></p> "
},
{
 "tags": ["Integrals"],
 "question_id":92208,
 "title": "92-S2-Q8",
 "body": "Integration by substitution, trigonometry, hyperbolic function.  <p><img src=\"/database/db/92/92-S2-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1992 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/92/92-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/92/92-S2.tex\"></a></p> "
},
{
 "tags": ["Vectors"],
 "question_id":92209,
 "title": "92-S2-Q9",
 "body": "Locus, scalar product, vector identity, vector triple product.  <p><img src=\"/database/db/92/92-S2-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1992 Question 9 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/92/92-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/92/92-S2.tex\"></a></p> "
},
{
 "tags": ["Complex numbers"],
 "question_id":92210,
 "title": "92-S2-Q10",
 "body": "Locus, argand diagram, real part, points on a circle.  <p><img src=\"/database/db/92/92-S2-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1992 Question 10 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/92/92-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/92/92-S2.tex\"></a></p> "
},
{
 "tags": ["Projectile motion"],
 "question_id":92211,
 "title": "92-S2-Q11",
 "body": "Throwing wallet up a cliff?! inequality.  <p><img src=\"/database/db/92/92-S2-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1992 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/92/92-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/92/92-S2.tex\"></a></p> "
},
{
 "tags": ["Hooke's law"],
 "question_id":92212,
 "title": "92-S2-Q12",
 "body": "Two wheels, modulus of elasticity, equilibrium positions.  <p><img src=\"/database/db/92/92-S2-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1992 Question 12 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/92/92-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/92/92-S2.tex\"></a></p> "
},
{
 "tags": ["Friction"],
 "question_id":92213,
 "title": "92-S2-Q13",
 "body": "Coefficient of friction, coefficient of restitution, inequality, bounce, particles on table.  <p><img src=\"/database/db/92/92-S2-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1992 Question 13 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/92/92-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/92/92-S2.tex\"></a></p> "
},
{
 "tags": ["Pulley"],
 "question_id":92214,
 "title": "92-S2-Q14",
 "body": "Tensions in string, tension, equilibrium.  <p><img src=\"/database/db/92/92-S2-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1992 Question 14 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/92/92-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/92/92-S2.tex\"></a></p> "
},
{
 "tags": ["Random walk"],
 "question_id":92215,
 "title": "92-S2-Q15",
 "body": "Binomial coefficient, differentiation.  <p><img src=\"/database/db/92/92-S2-Q15.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1992 Question 15 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/92/92-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/92/92-S2.tex\"></a></p> "
},
{
 "tags": ["Elementary probability"],
 "question_id":92216,
 "title": "92-S2-Q16",
 "body": "Taxi driver, tofees and mint.  <p><img src=\"/database/db/92/92-S2-Q16.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1992 Question 16 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/92/92-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/92/92-S2.tex\"></a></p> "
},
{
 "tags": ["Taylor series"],
 "question_id":92301,
 "title": "92-S3-Q1",
 "body": "Logarithm, differentiation, hyperbolic function, exponential function.  <p><img src=\"/database/db/92/92-S3-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1992 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/92/92-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/92/92-S3.tex\"></a></p> "
},
{
 "tags": ["Matrices"],
 "question_id":92302,
 "title": "92-S3-Q2",
 "body": "Proof by induction, matrix multiplication.  <p><img src=\"/database/db/92/92-S3-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1992 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/92/92-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/92/92-S3.tex\"></a></p> "
},
{
 "tags": ["Parametric equations"],
 "question_id":92303,
 "title": "92-S3-Q3",
 "body": "Curve sketching, quadratic equations, intersection of curves.  <p><img src=\"/database/db/92/92-S3-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1992 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/92/92-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/92/92-S3.tex\"></a></p> "
},
{
 "tags": ["Curve sketching"],
 "question_id":92304,
 "title": "92-S3-Q4",
 "body": "Family of curves, rational functions, first order differential equation, intersection of curve.  <p><img src=\"/database/db/92/92-S3-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1992 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/92/92-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/92/92-S3.tex\"></a></p> "
},
{
 "tags": ["Vectors"],
 "question_id":92305,
 "title": "92-S3-Q5",
 "body": "Coordinate geometry, tetrahedron, midpoint, sphere, intersections.  <p><img src=\"/database/db/92/92-S3-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1992 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/92/92-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/92/92-S3.tex\"></a></p> "
},
{
 "tags": ["Integration"],
 "question_id":92306,
 "title": "92-S3-Q6",
 "body": "Integration by parts, recurrence relation, reduction formula, curve sketching, area under curve.  <p><img src=\"/database/db/92/92-S3-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1992 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/92/92-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/92/92-S3.tex\"></a></p> "
},
{
 "tags": ["Euclidean geometry"],
 "question_id":92307,
 "title": "92-S3-Q7",
 "body": "Parallelogram, meet in a point.  <p><img src=\"/database/db/92/92-S3-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1992 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/92/92-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/92/92-S3.tex\"></a></p> "
},
{
 "tags": ["Sum"],
 "question_id":92308,
 "title": "92-S3-Q8",
 "body": "Trigonometry, binomial coefficients, sum.  <p><img src=\"/database/db/92/92-S3-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1992 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/92/92-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/92/92-S3.tex\"></a></p> "
},
{
 "tags": ["Conic sections"],
 "question_id":92309,
 "title": "92-S3-Q9",
 "body": "Straight line, bosect angle, ellipse, focus, polar coordinates, pole, tangent, first order differential equation.  <p><img src=\"/database/db/92/92-S3-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1992 Question 9 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/92/92-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/92/92-S3.tex\"></a></p> "
},
{
 "tags": ["Parametric equation,","Polar coordinates"],
 "question_id":92310,
 "title": "92-S3-Q10",
 "body": "Curve sketching, perimeter, area of region, integration.  <p><img src=\"/database/db/92/92-S3-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1992 Question 10 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/92/92-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/92/92-S3.tex\"></a></p> "
},
{
 "tags": ["Collision"],
 "question_id":92311,
 "title": "92-S3-Q11",
 "body": "Barrier, wall, rebound, coefficient of restitution.  <p><img src=\"/database/db/92/92-S3-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1992 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/92/92-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/92/92-S3.tex\"></a></p> "
},
{
 "tags": ["Circular motion"],
 "question_id":92312,
 "title": "92-S3-Q12",
 "body": "Hemispherical bowl, slide, first order differential equation, velocity.  <p><img src=\"/database/db/92/92-S3-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1992 Question 12 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/92/92-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/92/92-S3.tex\"></a></p> "
},
{
 "tags": ["Hooke's law"],
 "question_id":92313,
 "title": "92-S3-Q13",
 "body": "Modulus of elasticity, circular disc, string, reaction force, turn about fixed horizontal axis.  <p><img src=\"/database/db/92/92-S3-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1992 Question 13 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/92/92-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/92/92-S3.tex\"></a></p> "
},
{
 "tags": ["Projectile motion"],
 "question_id":92314,
 "title": "92-S3-Q14",
 "body": "Motion in polar coordinates, friction, tension, acceleration, second order differential equation.  <p><img src=\"/database/db/92/92-S3-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1992 Question 14 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/92/92-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/92/92-S3.tex\"></a></p> "
},
{
 "tags": ["Continuous random variable"],
 "question_id":92315,
 "title": "92-S3-Q15",
 "body": "Goat, probability density function, pdf, median, conditional probability.  <p><img src=\"/database/db/92/92-S3-Q15.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1992 Question 15 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/92/92-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/92/92-S3.tex\"></a></p> "
},
{
 "tags": ["Poisson distribution"],
 "question_id":92316,
 "title": "92-S3-Q16",
 "body": "Misprint in newspapper, probability.  <p><img src=\"/database/db/92/92-S3-Q16.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1992 Question 16 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/92/92-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/92/92-S3.tex\"></a></p> "
},
{
 "tags": ["Combinatorics"],
 "question_id":93101,
 "title": "93-S1-Q1",
 "body": "Dice, colors, number of ways, C1.  <p><img src=\"/database/db/93/93-S1-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1993 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/93/93-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/93/93-S1.tex\"></a></p> "
},
{
 "tags": ["Geometric progression"],
 "question_id":93102,
 "title": "93-S1-Q2",
 "body": "Series, limit, sequence, C1.  <p><img src=\"/database/db/93/93-S1-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1993 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/93/93-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/93/93-S1.tex\"></a></p> "
},
{
 "tags": ["Solution of equation"],
 "question_id":93103,
 "title": "93-S1-Q3",
 "body": "Inequality, algebra, reciprocal function, inverse, integer solution, inequality, C1.  <p><img src=\"/database/db/93/93-S1-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1993 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/93/93-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/93/93-S1.tex\"></a></p> "
},
{
 "tags": ["Integration by substitution"],
 "question_id":93104,
 "title": "93-S1-Q4",
 "body": "Trigonometry, sine function.  <p><img src=\"/database/db/93/93-S1-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1993 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/93/93-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/93/93-S1.tex\"></a></p> "
},
{
 "tags": ["Complex numbers"],
 "question_id":93105,
 "title": "93-S1-Q5",
 "body": "Modulus, triangle inequality, roots of equation.  <p><img src=\"/database/db/93/93-S1-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1993 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/93/93-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/93/93-S1.tex\"></a></p> "
},
{
 "tags": ["Curve sketching"],
 "question_id":93106,
 "title": "93-S1-Q6",
 "body": "Bump, rational functions, sine function, C1.  <p><img src=\"/database/db/93/93-S1-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1993 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/93/93-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/93/93-S1.tex\"></a></p> "
},
{
 "tags": ["Cubic equation"],
 "question_id":93107,
 "title": "93-S1-Q7",
 "body": "Curve sketching, roots of equation, inequality, C1.  <p><img src=\"/database/db/93/93-S1-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1993 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/93/93-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/93/93-S1.tex\"></a></p> "
},
{
 "tags": ["3-D geometry"],
 "question_id":93108,
 "title": "93-S1-Q8",
 "body": "Intersection of surface with spheres, Little Fitton.  <p><img src=\"/database/db/93/93-S1-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1993 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/93/93-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/93/93-S1.tex\"></a></p> "
},
{
 "tags": ["Differential equation"],
 "question_id":93109,
 "title": "93-S1-Q9",
 "body": "Handmade ice-cream, first order differential equation.  <p><img src=\"/database/db/93/93-S1-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1993 Question 9 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/93/93-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/93/93-S1.tex\"></a></p> "
},
{
 "tags": ["Springs and strings"],
 "question_id":93110,
 "title": "93-S1-Q10",
 "body": "Modulus of elasticity, lamp, equilibrium, rotate.  <p><img src=\"/database/db/93/93-S1-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1993 Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/93/93-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/93/93-S1.tex\"></a></p> "
},
{
 "tags": ["Equilibrium"],
 "question_id":93111,
 "title": "93-S1-Q11",
 "body": "Centre of mass, uniform square wire.  <p><img src=\"/database/db/93/93-S1-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1993 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/93/93-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/93/93-S1.tex\"></a></p> "
},
{
 "tags": ["Projectile motion"],
 "question_id":93112,
 "title": "93-S1-Q12",
 "body": "Clay pigeon, rifle, inequality, range.  <p><img src=\"/database/db/93/93-S1-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1993 Question 12 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/93/93-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/93/93-S1.tex\"></a></p> "
},
{
 "tags": ["Work and power"],
 "question_id":93113,
 "title": "93-S1-Q13",
 "body": "Train, tractive force, engine, time-distance. <p><img src=\"/database/db/93/93-S1-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1993 Question 13 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/93/93-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/93/93-S1.tex\"></a></p> "
},
{
 "tags": ["Continuous random variable"],
 "question_id":93114,
 "title": "93-S1-Q14",
 "body": "Mr Toad, probability density function, probability, limit, traffic light, Wild Wood.  <p><img src=\"/database/db/93/93-S1-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1993 Question 14 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/93/93-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/93/93-S1.tex\"></a></p> "
},
{
 "tags": ["Elementary probability"],
 "question_id":93115,
 "title": "93-S1-Q15",
 "body": "Captain Spalding, Gambriced, Frodox, truth, logic, native, probability.  <p><img src=\"/database/db/93/93-S1-Q15.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1993 Question 15 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/93/93-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/93/93-S1.tex\"></a></p> "
},
{
 "tags": ["Geometrical probability"],
 "question_id":93116,
 "title": "93-S1-Q16",
 "body": "Integration by substitution, uniform distribution, pins on lines.  <p><img src=\"/database/db/93/93-S1-Q16.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1993 Question 16 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/93/93-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/93/93-S1.tex\"></a></p> "
},
{
 "tags": ["Colonel Blotto"],
 "question_id":93201,
 "title": "93-S2-Q1",
 "body": "C1.  <p><img src=\"/database/db/93/93-S2-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1993 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/93/93-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/93/93-S2.tex\"></a></p> "
},
{
 "tags": ["Integrals"],
 "question_id":93202,
 "title": "93-S2-Q2",
 "body": "Substitution, trigonometry.  <p><img src=\"/database/db/93/93-S2-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1993 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/93/93-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/93/93-S2.tex\"></a></p> "
},
{
 "tags": ["Differential equation"],
 "question_id":93203,
 "title": "93-S2-Q3",
 "body": "Substitution, first order equation.  <p><img src=\"/database/db/93/93-S2-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1993 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/93/93-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/93/93-S2.tex\"></a></p> "
},
{
 "tags": ["Vector geometry"],
 "question_id":93204,
 "title": "93-S2-Q4",
 "body": "3D, non-parallel lines, shortest distance.  <p><img src=\"/database/db/93/93-S2-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1993 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/93/93-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/93/93-S2.tex\"></a></p> "
},
{
 "tags": ["Polar coordinates"],
 "question_id":93205,
 "title": "93-S2-Q5",
 "body": "Curve sketching, equiangular spiral, plane geometry, arc length of curve.  <p><img src=\"/database/db/93/93-S2-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1993 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/93/93-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/93/93-S2.tex\"></a></p> "
},
{
 "tags": ["Matrices"],
 "question_id":93206,
 "title": "93-S2-Q6",
 "body": "Proofs and counterexamples, determinant, quadratic, matrix multiplication, linear algebra.  <p><img src=\"/database/db/93/93-S2-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1993 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/93/93-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/93/93-S2.tex\"></a></p> "
},
{
 "tags": ["Modulo arithmetic"],
 "question_id":93207,
 "title": "Roots of equation",
 "body": "Divisibility, solution of equation.  <p><img src=\"/database/db/93/93-S2-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1993 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/93/93-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/93/93-S2.tex\"></a></p> "
},
{
 "tags": ["Inequalities"],
 "question_id":93208,
 "title": "93-S2-Q8",
 "body": "AM-GM inequality, proof by induction, C1.  <p><img src=\"/database/db/93/93-S2-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1993 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/93/93-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/93/93-S2.tex\"></a></p> "
},
{
 "tags": ["Complex number"],
 "question_id":93209,
 "title": "93-S2-Q9",
 "body": "Argument, imaginary part, inequality, proof.  <p><img src=\"/database/db/93/93-S2-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1993 Question 9 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/93/93-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/93/93-S2.tex\"></a></p> "
},
{
 "tags": ["Matrices"],
 "question_id":93210,
 "title": "93-S2-Q10",
 "body": "Diagonal matrix, transformation, change of basis.  <p><img src=\"/database/db/93/93-S2-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1993 Question 10 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/93/93-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/93/93-S2.tex\"></a></p> "
},
{
 "tags": ["Fluid dynamics"],
 "question_id":93211,
 "title": "93-S2-Q11",
 "body": "Immersed body into liquid, buoyancy and drag, equilibrium.  <p><img src=\"/database/db/93/93-S2-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1993 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/93/93-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/93/93-S2.tex\"></a></p> "
},
{
 "tags": ["Friction"],
 "question_id":93212,
 "title": "93-S2-Q12",
 "body": "Sphere on inclined plane, rolling not slipping.  <p><img src=\"/database/db/93/93-S2-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1993 Question 12 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/93/93-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/93/93-S2.tex\"></a></p> "
},
{
 "tags": ["SHM"],
 "question_id":93213,
 "title": "93-S2-Q13",
 "body": "Simple harmonic motion, repulsive force, electrical charge, perturbation, period of motion, binomial approximation.  <p><img src=\"/database/db/93/93-S2-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1993 Question 13 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/93/93-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/93/93-S2.tex\"></a></p> "
},
{
 "tags": ["Energy"],
 "question_id":93214,
 "title": "93-S2-Q14",
 "body": "Hooke's law, restitution, kinetic energy, ball thrown from floor.  <p><img src=\"/database/db/93/93-S2-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1993 Question 14 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/93/93-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/93/93-S2.tex\"></a></p> "
},
{
 "tags": ["Uniform distribution"],
 "question_id":93215,
 "title": "93-S2-Q15",
 "body": "LEP, VOZ, computer programs, fractional part, magnitude of error.  <p><img src=\"/database/db/93/93-S2-Q15.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1993 Question 15 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/93/93-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/93/93-S2.tex\"></a></p> "
},
{
 "tags": ["Poisson process"],
 "question_id":93216,
 "title": "93-S2-Q16",
 "body": "Bus arriving.  <p><img src=\"/database/db/93/93-S2-Q16.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1993 Question 16 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/93/93-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/93/93-S2.tex\"></a></p> "
},
{
 "tags": ["Parametric equations"],
 "question_id":93301,
 "title": "93-S3-Q1",
 "body": "Curve sketching, parabola, length of curve, volume of revolution.  <p><img src=\"/database/db/93/93-S3-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1993 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/93/93-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/93/93-S3.tex\"></a></p> "
},
{
 "tags": ["Implicit equation"],
 "question_id":93302,
 "title": "93-S3-Q2",
 "body": "Implicit differentiation, polar coordinates, area of curve.  <p><img src=\"/database/db/93/93-S3-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1993 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/93/93-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/93/93-S3.tex\"></a></p> "
},
{
 "tags": ["Matrices"],
 "question_id":93303,
 "title": "93-S3-Q3",
 "body": "System of equations, unique solution, inverse.  <p><img src=\"/database/db/93/93-S3-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1993 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/93/93-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/93/93-S3.tex\"></a></p> "
},
{
 "tags": ["Sum of series"],
 "question_id":93304,
 "title": "93-S3-Q4",
 "body": "Sequences.  <p><img src=\"/database/db/93/93-S3-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1993 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/93/93-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/93/93-S3.tex\"></a></p> "
},
{
 "tags": ["Groups"],
 "question_id":93305,
 "title": "93-S3-Q5",
 "body": "Set of complex numbers, binary operation, associative and commutative, identity, isomorphism, matrix groups.  <p><img src=\"/database/db/93/93-S3-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1993 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/93/93-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/93/93-S3.tex\"></a></p> "
},
{
 "tags": ["Complex numbers"],
 "question_id":93306,
 "title": "93-S3-Q6",
 "body": "Argand diagram, circle, locus, Mobius transformation, position.  <p><img src=\"/database/db/93/93-S3-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1993 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/93/93-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/93/93-S3.tex\"></a></p> "
},
{
 "tags": ["Hyperbolic functions"],
 "question_id":93307,
 "title": "93-S3-Q7",
 "body": "Simultaneous equations, root of equation, iterative root finding.  <p><img src=\"/database/db/93/93-S3-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1993 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/93/93-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/93/93-S3.tex\"></a></p> "
},
{
 "tags": ["Coordinate geometry"],
 "question_id":93308,
 "title": "93-S3-Q8",
 "body": "Square pyramid, vectors, quadrilateral, parallelogram.  <p><img src=\"/database/db/93/93-S3-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1993 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/93/93-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/93/93-S3.tex\"></a></p> "
},
{
 "tags": ["Inequality"],
 "question_id":93309,
 "title": "93-S3-Q9",
 "body": "Proof, sum over pairs, sum of squares.  <p><img src=\"/database/db/93/93-S3-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1993 Question 9 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/93/93-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/93/93-S3.tex\"></a></p> "
},
{
 "tags": ["Linear transformation"],
 "question_id":93310,
 "title": "93-S3-Q10",
 "body": "Parallelogram, lines, gradients, matrix transformation, area, determinant.  <p><img src=\"/database/db/93/93-S3-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1993 Question 10 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/93/93-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/93/93-S3.tex\"></a></p> "
},
{
 "tags": ["Moment of inertia"],
 "question_id":93311,
 "title": "93-S3-Q11",
 "body": "Force along lines, direction of rotation, parallel axis theorem, angular acceleration.  <p><img src=\"/database/db/93/93-S3-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1993 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/93/93-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/93/93-S3.tex\"></a></p> "
},
{
 "tags": ["Hooke's law"],
 "question_id":93312,
 "title": "93-S3-Q12",
 "body": "Modulus of elasticity, equilibrium, string, tension.  <p><img src=\"/database/db/93/93-S3-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1993 Question 12 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/93/93-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/93/93-S3.tex\"></a></p> "
},
{
 "tags": ["Pulley"],
 "question_id":93313,
 "title": "93-S3-Q13",
 "body": "Energy, variable mass, circular disc.  <p><img src=\"/database/db/93/93-S3-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1993 Question 13 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/93/93-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/93/93-S3.tex\"></a></p> "
},
{
 "tags": ["Collision"],
 "question_id":93314,
 "title": "93-S3-Q14",
 "body": "Coefficient of restitution, strike, rebound.  <p><img src=\"/database/db/93/93-S3-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1993 Question 14 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/93/93-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/93/93-S3.tex\"></a></p> "
},
{
 "tags": ["Coin toss"],
 "question_id":93315,
 "title": "93-S3-Q15",
 "body": "Elementary probability, expectation, binomial distribution, C1ish.  <p><img src=\"/database/db/93/93-S3-Q15.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1993 Question 15 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/93/93-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/93/93-S3.tex\"></a></p> "
},
{
 "tags": ["Truncated normal distribution"],
 "question_id":93316,
 "title": "93-S3-Q16",
 "body": "Pdf, probability density function, mean, curve sketching, setting questions.  <p><img src=\"/database/db/93/93-S3-Q16.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1993 Question 16 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/93/93-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/93/93-S3.tex\"></a></p> "
},
{
 "tags": ["Volume and Surface area"],
 "question_id":94101,
 "title": "94-S1-Q1",
 "body": "Attic, rectangular base, C1.  <p><img src=\"/database/db/94/94-S1-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1994 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/94/94-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/94/94-S1.tex\"></a></p> "
},
{
 "tags": ["Differentiation"],
 "question_id":94102,
 "title": "94-S1-Q2",
 "body": "Derivatives of powers.  <p><img src=\"/database/db/94/94-S1-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1994 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/94/94-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/94/94-S1.tex\"></a></p> "
},
{
 "tags": ["Binomial coefficient"],
 "question_id":94103,
 "title": "94-S1-Q3",
 "body": "Binomail expansion, coefficient, sum, even and odd.  <p><img src=\"/database/db/94/94-S1-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1994 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/94/94-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/94/94-S1.tex\"></a></p> "
},
{
 "tags": ["Integration"],
 "question_id":94104,
 "title": "94-S1-Q4",
 "body": "Trigonometry identity, arctan.  <p><img src=\"/database/db/94/94-S1-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1994 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/94/94-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/94/94-S1.tex\"></a></p> "
},
{
 "tags": ["Sketching"],
 "question_id":94105,
 "title": "94-S1-Q5",
 "body": "Locus, parabola, tangents.  <p><img src=\"/database/db/94/94-S1-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1994 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/94/94-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/94/94-S1.tex\"></a></p> "
},
{
 "tags": ["Complex numbers"],
 "question_id":94106,
 "title": "94-S1-Q6",
 "body": "Mobius transformation, real and imaginary part, conjugate, composition of functions.  <p><img src=\"/database/db/94/94-S1-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1994 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/94/94-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/94/94-S1.tex\"></a></p> "
},
{
 "tags": ["Proof by induction"],
 "question_id":94107,
 "title": "94-S1-Q7",
 "body": "Pattern, cubes of integers, sum.  <p><img src=\"/database/db/94/94-S1-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1994 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/94/94-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/94/94-S1.tex\"></a></p> "
},
{
 "tags": ["Integration by substitution"],
 "question_id":94108,
 "title": "94-S1-Q8",
 "body": "Logarithmic, trigonometric functions, change of variables, phase.  <p><img src=\"/database/db/94/94-S1-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1994 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/94/94-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/94/94-S1.tex\"></a></p> "
},
{
 "tags": ["Projectile motion"],
 "question_id":94109,
 "title": "94-S1-Q9",
 "body": "Cannon ball, equation of motion, range, inequality, angle of firing.  <p><img src=\"/database/db/94/94-S1-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1994 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/94/94-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/94/94-S1.tex\"></a></p> "
},
{
 "tags": ["Circular motion"],
 "question_id":94110,
 "title": "94-S1-Q10",
 "body": "Modulus of elasticity, horizontal circle, inequality, angular velocity.  <p><img src=\"/database/db/94/94-S1-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1994 Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/94/94-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/94/94-S1.tex\"></a></p> "
},
{
 "tags": ["Pulley"],
 "question_id":94111,
 "title": "94-S1-Q11",
 "body": "Railway wagon, equilibrium, collide, incline.  <p><img src=\"/database/db/94/94-S1-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1994 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/94/94-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/94/94-S1.tex\"></a></p> "
},
{
 "tags": ["Elementary probability"],
 "question_id":94112,
 "title": "94-S1-Q12",
 "body": "Female colleges of Cambridge, Newnham, New Hall, C1.  <p><img src=\"/database/db/94/94-S1-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1994 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/94/94-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/94/94-S1.tex\"></a></p> "
},
{
 "tags": ["Indicator function"],
 "question_id":94113,
 "title": "94-S1-Q13",
 "body": "Without replacement, expectation, binomial coefficients. <p><img src=\"/database/db/94/94-S1-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1994 Question 13 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/94/94-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/94/94-S1.tex\"></a></p> "
},
{
 "tags": ["Poisson distribution"],
 "question_id":94114,
 "title": "94-S1-Q14",
 "body": "Handing essays, mean and variance, probability density functino, pdf.  <p><img src=\"/database/db/94/94-S1-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1994 Question 14 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/94/94-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/94/94-S1.tex\"></a></p> "
},
{
 "tags": ["Number theory"],
 "question_id":94201,
 "title": "94-S2-Q1",
 "body": "Digits, C1.  <p><img src=\"/database/db/94/94-S2-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1994 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/94/94-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/94/94-S2.tex\"></a></p> "
},
{
 "tags": ["Integration by parts"],
 "question_id":94202,
 "title": "94-S2-Q2",
 "body": "Polynomials, nth derivatives, degree of polynomials.  <p><img src=\"/database/db/94/94-S2-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1994 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/94/94-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/94/94-S2.tex\"></a></p> "
},
{
 "tags": ["Functions"],
 "question_id":94203,
 "title": "94-S2-Q3",
 "body": "Functional equation, non-constnat function, C1.  <p><img src=\"/database/db/94/94-S2-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1994 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/94/94-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/94/94-S2.tex\"></a></p> "
},
{
 "tags": ["Integration"],
 "question_id":94204,
 "title": "94-S2-Q4",
 "body": "Area of circles and ellipses, intersection.  <p><img src=\"/database/db/94/94-S2-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1994 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/94/94-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/94/94-S2.tex\"></a></p> "
},
{
 "tags": ["Roots of equations"],
 "question_id":94205,
 "title": "94-S2-Q5",
 "body": "Modulus function, curve sketching, C1.  <p><img src=\"/database/db/94/94-S2-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1994 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/94/94-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/94/94-S2.tex\"></a></p> "
},
{
 "tags": ["Proof by induction"],
 "question_id":94206,
 "title": "94-S2-Q6",
 "body": "Trigonometric series.  <p><img src=\"/database/db/94/94-S2-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1994 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/94/94-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/94/94-S2.tex\"></a></p> "
},
{
 "tags": ["Coordinate geometry"],
 "question_id":94207,
 "title": "94-S2-Q7",
 "body": "Ruritanian Infantry division, flagpoles, cartesian equations, straight lines, C1.  <p><img src=\"/database/db/94/94-S2-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1994 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/94/94-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/94/94-S2.tex\"></a></p> "
},
{
 "tags": ["Financial mathematics"],
 "question_id":94208,
 "title": "94-S2-Q8",
 "body": "24 Hour Spares, continuous function, profits, inequality, C1.  <p><img src=\"/database/db/94/94-S2-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1994 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/94/94-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/94/94-S2.tex\"></a></p> "
},
{
 "tags": ["Equilibrium"],
 "question_id":94209,
 "title": "94-S2-Q9",
 "body": "Particle attached to rod, angle with horizontal.  <p><img src=\"/database/db/94/94-S2-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1994 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/94/94-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/94/94-S2.tex\"></a></p> "
},
{
 "tags": ["Collision"],
 "question_id":94210,
 "title": "94-S2-Q10",
 "body": "Modulus of elasticity, rope, truk towing a trailer, taut.  <p><img src=\"/database/db/94/94-S2-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1994 Question 10 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/94/94-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/94/94-S2.tex\"></a></p> "
},
{
 "tags": ["Projectile motion"],
 "question_id":94211,
 "title": "94-S2-Q11",
 "body": "Upwards projectile, inequality, fragments, split into fragments, conservation of momentum.  <p><img src=\"/database/db/94/94-S2-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1994 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/94/94-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/94/94-S2.tex\"></a></p> "
},
{
 "tags": ["Elementary probability"],
 "question_id":94212,
 "title": "94-S2-Q12",
 "body": "Calamity Jane, Buffalo Bill, craps, fair dice, C1.  <p><img src=\"/database/db/94/94-S2-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1994 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/94/94-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/94/94-S2.tex\"></a></p> "
},
{
 "tags": ["Exponential distribution"],
 "question_id":94213,
 "title": "94-S2-Q13",
 "body": "Cruncho, cards of mathematicians, expectation.  <p><img src=\"/database/db/94/94-S2-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1994 Question 13 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/94/94-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/94/94-S2.tex\"></a></p> "
},
{
 "tags": ["Geometrical probability"],
 "question_id":94214,
 "title": "94-S2-Q14",
 "body": "Septimus Moneybags, dart board, uniform distribution, variance, charity fete, minimise expected loss.  <p><img src=\"/database/db/94/94-S2-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1994 Question 14 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/94/94-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/94/94-S2.tex\"></a></p> "
},
{
 "tags": ["Integration by parts"],
 "question_id":94301,
 "title": "94-S3-Q1",
 "body": "Reduction formula, hyperbolica functions.  <p><img src=\"/database/db/94/94-S3-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1994 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/94/94-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/94/94-S3.tex\"></a></p> "
},
{
 "tags": ["Polynomial equations"],
 "question_id":94302,
 "title": "94-S3-Q2",
 "body": "Substitution, algebra, quartic equations, C1.  <p><img src=\"/database/db/94/94-S3-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1994 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/94/94-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/94/94-S3.tex\"></a></p> "
},
{
 "tags": ["Euclidean geometry"],
 "question_id":94303,
 "title": "94-S3-Q3",
 "body": "Intersection of plane with sphere, simultaneous equations, circle.  <p><img src=\"/database/db/94/94-S3-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1994 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/94/94-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/94/94-S3.tex\"></a></p> "
},
{
 "tags": ["Differential equations"],
 "question_id":94304,
 "title": "94-S3-Q4",
 "body": "Solution curves, curve sketching, tangent.  <p><img src=\"/database/db/94/94-S3-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1994 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/94/94-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/94/94-S3.tex\"></a></p> "
},
{
 "tags": ["Taylor series"],
 "question_id":94305,
 "title": "94-S3-Q5",
 "body": "Proof by induction, derivatives, logarithmic function, Maclaurin series, coefficient, power series.  <p><img src=\"/database/db/94/94-S3-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1994 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/94/94-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/94/94-S3.tex\"></a></p> "
},
{
 "tags": ["Complex numbers"],
 "question_id":94306,
 "title": "94-S3-Q6",
 "body": "Argand diagram, rotation, necessary and sufficient.  <p><img src=\"/database/db/94/94-S3-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1994 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/94/94-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/94/94-S3.tex\"></a></p> "
},
{
 "tags": ["Groups"],
 "question_id":94307,
 "title": "94-S3-Q7",
 "body": "Permutation, isomorphism, roots of unity, complex multiplication.  <p><img src=\"/database/db/94/94-S3-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1994 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/94/94-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/94/94-S3.tex\"></a></p> "
},
{
 "tags": ["Matrices"],
 "question_id":94308,
 "title": "94-S3-Q8",
 "body": "Matrix product, determinant, complex numbers, sum of squares.  <p><img src=\"/database/db/94/94-S3-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1994 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/94/94-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/94/94-S3.tex\"></a></p> "
},
{
 "tags": ["Collision"],
 "question_id":94309,
 "title": "94-S3-Q9",
 "body": "Coefficient of restitution, symmetrical bowl, first order differential equation.  <p><img src=\"/database/db/94/94-S3-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1994 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/94/94-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/94/94-S3.tex\"></a></p> "
},
{
 "tags": ["Time-distance"],
 "question_id":94310,
 "title": "94-S3-Q10",
 "body": "Gammaland, pilot constant wind, C1.  <p><img src=\"/database/db/94/94-S3-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1994 Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/94/94-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/94/94-S3.tex\"></a></p> "
},
{
 "tags": ["Equilibrium"],
 "question_id":94311,
 "title": "94-S3-Q11",
 "body": "Stepladder, modulus of elasticity, rope.  <p><img src=\"/database/db/94/94-S3-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1994 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/94/94-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/94/94-S3.tex\"></a></p> "
},
{
 "tags": ["Elementary probability"],
 "question_id":94312,
 "title": "94-S3-Q12",
 "body": "Tennis match, winning match.  <p><img src=\"/database/db/94/94-S3-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1994 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/94/94-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/94/94-S3.tex\"></a></p> "
},
{
 "tags": ["Continuous random variable"],
 "question_id":94313,
 "title": "94-S3-Q13",
 "body": "Trapeze artist, probability density function, hyperbolic function, rope failure.  <p><img src=\"/database/db/94/94-S3-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1994 Question 13 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/94/94-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/94/94-S3.tex\"></a></p> "
},
{
 "tags": ["Geometrical probability"],
 "question_id":94314,
 "title": "94-S3-Q14",
 "body": "Points on perimeter of circle, form triangle, probability.  <p><img src=\"/database/db/94/94-S3-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1994 Question 14 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/94/94-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/94/94-S3.tex\"></a></p> "
},
{
 "tags": ["Inequalities"],
 "question_id":95101,
 "title": "95-S1-Q1",
 "body": "Curve sketching, region, lines, C1.  <p><img src=\"/database/db/95/95-S1-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1995 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/95/95-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/95/95-S1.tex\"></a></p> "
},
{
 "tags": ["Integration"],
 "question_id":95102,
 "title": "95-S1-Q2",
 "body": "Trigonometric substitution.  <p><img src=\"/database/db/95/95-S1-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1995 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/95/95-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/95/95-S1.tex\"></a></p> "
},
{
 "tags": ["Proof by induction"],
 "question_id":95103,
 "title": "95-S1-Q3",
 "body": "Telescoping sum, sum of cubes.  <p><img src=\"/database/db/95/95-S1-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1995 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/95/95-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/95/95-S1.tex\"></a></p> "
},
{
 "tags": ["Complex numbers"],
 "question_id":95104,
 "title": "95-S1-Q4",
 "body": "de Moivre's theorem, binomial theorem, real and imaginary parts.  <p><img src=\"/database/db/95/95-S1-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1995 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/95/95-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/95/95-S1.tex\"></a></p> "
},
{
 "tags": ["Analysis"],
 "question_id":95105,
 "title": "95-S1-Q5",
 "body": "Binomial coefficient, differentiation, integral, harmonic sum.  <p><img src=\"/database/db/95/95-S1-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1995 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/95/95-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/95/95-S1.tex\"></a></p> "
},
{
 "tags": ["Differential equations"],
 "question_id":95106,
 "title": "95-S1-Q6",
 "body": "Substitution.  <p><img src=\"/database/db/95/95-S1-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1995 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/95/95-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/95/95-S1.tex\"></a></p> "
},
{
 "tags": ["Vector geometry"],
 "question_id":95107,
 "title": "95-S1-Q7",
 "body": "Centroid, midpoint, altitudes of triangle.  <p><img src=\"/database/db/95/95-S1-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1995 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/95/95-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/95/95-S1.tex\"></a></p> "
},
{
 "tags": ["Differential equation"],
 "question_id":95108,
 "title": "95-S1-Q8",
 "body": "Second order equation, substitution.  <p><img src=\"/database/db/95/95-S1-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1995 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/95/95-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/95/95-S1.tex\"></a></p> "
},
{
 "tags": ["Projectile motion"],
 "question_id":95109,
 "title": "95-S1-Q9",
 "body": "Angle of projection, parabola, assumptions.  <p><img src=\"/database/db/95/95-S1-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1995 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/95/95-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/95/95-S1.tex\"></a></p> "
},
{
 "tags": ["Hooke's law"],
 "question_id":95110,
 "title": "95-S1-Q10",
 "body": "Equilibrium, modulus of elasticity, restitution.  <p><img src=\"/database/db/95/95-S1-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1995 Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/95/95-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/95/95-S1.tex\"></a></p> "
},
{
 "tags": ["Friction"],
 "question_id":95111,
 "title": "95-S1-Q11",
 "body": "Cylinder, surface in contact, coefficient of friction.  <p><img src=\"/database/db/95/95-S1-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1995 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/95/95-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/95/95-S1.tex\"></a></p> "
},
{
 "tags": ["Elementary probability"],
 "question_id":95112,
 "title": "95-S1-Q12",
 "body": "Combinatorics, hockey, C1.  <p><img src=\"/database/db/95/95-S1-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1995 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/95/95-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/95/95-S1.tex\"></a></p> "
},
{
 "tags": ["Poisson distribution"],
 "question_id":95113,
 "title": "95-S1-Q13",
 "body": "Cancerous cells, expectation, probability. <p><img src=\"/database/db/95/95-S1-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1995 Question 13 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/95/95-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/95/95-S1.tex\"></a></p> "
},
{
 "tags": ["Normal distribution"],
 "question_id":95114,
 "title": "95-S1-Q14",
 "body": "Proportion, maximum value, differentiation.  <p><img src=\"/database/db/95/95-S1-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1995 Question 14 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/95/95-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/95/95-S1.tex\"></a></p> "
},
{
 "tags": ["Sum"],
 "question_id":95201,
 "title": "95-S2-Q1",
 "body": "Geometric series, differentiation, sum of squares.  <p><img src=\"/database/db/95/95-S2-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1995 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/95/95-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/95/95-S2.tex\"></a></p> "
},
{
 "tags": ["Combinatorics"],
 "question_id":95202,
 "title": "95-S2-Q2",
 "body": "Recurrence relation, proof by induction.  <p><img src=\"/database/db/95/95-S2-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1995 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/95/95-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/95/95-S2.tex\"></a></p> "
},
{
 "tags": ["Tour de Clochemerle"],
 "question_id":95203,
 "title": "95-S2-Q3",
 "body": "C1.  <p><img src=\"/database/db/95/95-S2-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1995 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/95/95-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/95/95-S2.tex\"></a></p> "
},
{
 "tags": ["Analysis"],
 "question_id":95204,
 "title": "95-S2-Q4",
 "body": "Integration by parts, recurrence relation, curve sketching, trigonometry, inequality, limit.  <p><img src=\"/database/db/95/95-S2-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1995 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/95/95-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/95/95-S2.tex\"></a></p> "
},
{
 "tags": ["Elementary geometry"],
 "question_id":95205,
 "title": "95-S2-Q5",
 "body": "Birkhoff Maclane, C1.  <p><img src=\"/database/db/95/95-S2-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1995 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/95/95-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/95/95-S2.tex\"></a></p> "
},
{
 "tags": ["Complex numbers"],
 "question_id":95206,
 "title": "95-S2-Q6",
 "body": "Roots of quadratics, roots of unity.  <p><img src=\"/database/db/95/95-S2-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1995 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/95/95-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/95/95-S2.tex\"></a></p> "
},
{
 "tags": ["Heron's formula"],
 "question_id":95207,
 "title": "95-S2-Q7",
 "body": "Circle, triangle, coordinate geometry, C1.  <p><img src=\"/database/db/95/95-S2-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1995 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/95/95-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/95/95-S2.tex\"></a></p> "
},
{
 "tags": ["Differential equations"],
 "question_id":95208,
 "title": "95-S2-Q8",
 "body": "Bacteria in nutrient medium, limit, first order equation.  <p><img src=\"/database/db/95/95-S2-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1995 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/95/95-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/95/95-S2.tex\"></a></p> "
},
{
 "tags": ["Friction"],
 "question_id":95209,
 "title": "95-S2-Q9",
 "body": "Equilibrium, inclined plane.  <p><img src=\"/database/db/95/95-S2-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1995 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/95/95-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/95/95-S2.tex\"></a></p> "
},
{
 "tags": ["Collision"],
 "question_id":95210,
 "title": "95-S2-Q10",
 "body": "Coefficient of restitution, spheres.  <p><img src=\"/database/db/95/95-S2-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1995 Question 10 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/95/95-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/95/95-S2.tex\"></a></p> "
},
{
 "tags": ["Projectile motion"],
 "question_id":95211,
 "title": "95-S2-Q11",
 "body": "Mass under gravity, distance apart of two particles.  <p><img src=\"/database/db/95/95-S2-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1995 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/95/95-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/95/95-S2.tex\"></a></p> "
},
{
 "tags": ["Elementary probability"],
 "question_id":95212,
 "title": "95-S2-Q12",
 "body": "Bread roll throwing duel Drones' club, probability, C1.  <p><img src=\"/database/db/95/95-S2-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1995 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/95/95-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/95/95-S2.tex\"></a></p> "
},
{
 "tags": ["Poisson distribution"],
 "question_id":95213,
 "title": "95-S2-Q13",
 "body": "Fly By Night Airline, expectation, maximum.  <p><img src=\"/database/db/95/95-S2-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1995 Question 13 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/95/95-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/95/95-S2.tex\"></a></p> "
},
{
 "tags": ["Normal distribution"],
 "question_id":95214,
 "title": "95-S2-Q14",
 "body": "Scientist, probability density, hypothesis testing.  <p><img src=\"/database/db/95/95-S2-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1995 Question 14 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/95/95-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/95/95-S2.tex\"></a></p> "
},
{
 "tags": ["Simultaneous equations"],
 "question_id":95301,
 "title": "95-S3-Q1",
 "body": "Linear systems, C1.  <p><img src=\"/database/db/95/95-S3-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1995 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/95/95-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/95/95-S3.tex\"></a></p> "
},
{
 "tags": ["Integration by parts"],
 "question_id":95302,
 "title": "95-S3-Q2",
 "body": "Recurrence formula.  <p><img src=\"/database/db/95/95-S3-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1995 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/95/95-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/95/95-S3.tex\"></a></p> "
},
{
 "tags": ["Differential equation"],
 "question_id":95303,
 "title": "95-S3-Q3",
 "body": "Simple harmonic motion, SHM, damped, maximum, second order equations.  <p><img src=\"/database/db/95/95-S3-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1995 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/95/95-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/95/95-S3.tex\"></a></p> "
},
{
 "tags": ["Analysis"],
 "question_id":95304,
 "title": "95-S3-Q4",
 "body": "Trigonometric series, inequality.  <p><img src=\"/database/db/95/95-S3-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1995 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/95/95-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/95/95-S3.tex\"></a></p> "
},
{
 "tags": ["Taylor series"],
 "question_id":95305,
 "title": "95-S3-Q5",
 "body": "Maclaurin series, coefficient, power series, differentiation, trigonometric functions, proof by induction.  <p><img src=\"/database/db/95/95-S3-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1995 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/95/95-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/95/95-S3.tex\"></a></p> "
},
{
 "tags": ["Complex numbers"],
 "question_id":95306,
 "title": "95-S3-Q6",
 "body": "Argand diagram, inverse function.  <p><img src=\"/database/db/95/95-S3-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1995 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/95/95-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/95/95-S3.tex\"></a></p> "
},
{
 "tags": ["Groups"],
 "question_id":95307,
 "title": "95-S3-Q7",
 "body": "Set, isomorphism.  <p><img src=\"/database/db/95/95-S3-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1995 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/95/95-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/95/95-S3.tex\"></a></p> "
},
{
 "tags": ["Vector geometry"],
 "question_id":95308,
 "title": "95-S3-Q8",
 "body": "3D, perpendicular distance, plane, surface, scalar product, geometrical interpretation, circles.  <p><img src=\"/database/db/95/95-S3-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1995 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/95/95-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/95/95-S3.tex\"></a></p> "
},
{
 "tags": ["Circular motion"],
 "question_id":95309,
 "title": "95-S3-Q9",
 "body": "Circular disc, stable equilibrium, moment of inertia, maximum.  <p><img src=\"/database/db/95/95-S3-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1995 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/95/95-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/95/95-S3.tex\"></a></p> "
},
{
 "tags": ["Projectile motion"],
 "question_id":95310,
 "title": "95-S3-Q10",
 "body": "Cannon ball, angle of firing, range.  <p><img src=\"/database/db/95/95-S3-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1995 Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/95/95-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/95/95-S3.tex\"></a></p> "
},
{
 "tags": ["Time-distance"],
 "question_id":95311,
 "title": "95-S3-Q11",
 "body": "Ship sailing, wind, C1.  <p><img src=\"/database/db/95/95-S3-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1995 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/95/95-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/95/95-S3.tex\"></a></p> "
},
{
 "tags": ["Probability density function"],
 "question_id":95312,
 "title": "95-S3-Q12",
 "body": "Joint pdf, normal distribution, radially symmetric.  <p><img src=\"/database/db/95/95-S3-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1995 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/95/95-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/95/95-S3.tex\"></a></p> "
},
{
 "tags": ["Coding and Cryptography"],
 "question_id":95313,
 "title": "95-S3-Q13",
 "body": "C1.  <p><img src=\"/database/db/95/95-S3-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1995 Question 13 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/95/95-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/95/95-S3.tex\"></a></p> "
},
{
 "tags": ["Moment generating function"],
 "question_id":95314,
 "title": "95-S3-Q14",
 "body": "Probability density function, pdf, candidate, examination.  <p><img src=\"/database/db/95/95-S3-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1995 Question 14 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/95/95-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/95/95-S3.tex\"></a></p> "
},
{
 "tags": ["Differentiation"],
 "question_id":96101,
 "title": "96-S1-Q1",
 "body": "Surface area, minimum, sphere, cylinder, C1.  <p><img src=\"/database/db/96/96-S1-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1996 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/96/96-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/96/96-S1.tex\"></a></p> "
},
{
 "tags": ["Integration"],
 "question_id":96102,
 "title": "96-S1-Q2",
 "body": "Polynomial, binomial coefficient.  <p><img src=\"/database/db/96/96-S1-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1996 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/96/96-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/96/96-S1.tex\"></a></p> "
},
{
 "tags": ["Number theory"],
 "question_id":96103,
 "title": "96-S1-Q3",
 "body": "Divisibility, factorisation, modulo arithmetic, C1.  <p><img src=\"/database/db/96/96-S1-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1996 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/96/96-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/96/96-S1.tex\"></a></p> "
},
{
 "tags": ["Integral"],
 "question_id":96104,
 "title": "96-S1-Q4",
 "body": "Arctan, logarithmic integration, substitution.  <p><img src=\"/database/db/96/96-S1-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1996 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/96/96-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/96/96-S1.tex\"></a></p> "
},
{
 "tags": ["Complex numbers"],
 "question_id":96105,
 "title": "96-S1-Q5",
 "body": "Quadratic equations, rational numbers.  <p><img src=\"/database/db/96/96-S1-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1996 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/96/96-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/96/96-S1.tex\"></a></p> "
},
{
 "tags": ["Analysis"],
 "question_id":96106,
 "title": "96-S1-Q6",
 "body": "Telescoping sum, trigonometry, integration.  <p><img src=\"/database/db/96/96-S1-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1996 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/96/96-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/96/96-S1.tex\"></a></p> "
},
{
 "tags": ["Differential equation"],
 "question_id":96107,
 "title": "96-S1-Q7",
 "body": "Water tank, power law, steady rate, first order equation.  <p><img src=\"/database/db/96/96-S1-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1996 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/96/96-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/96/96-S1.tex\"></a></p> "
},
{
 "tags": ["Decimal expansions"],
 "question_id":96108,
 "title": "96-S1-Q8",
 "body": "Geometric series, positive integer, rational numbers, C1.  <p><img src=\"/database/db/96/96-S1-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1996 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/96/96-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/96/96-S1.tex\"></a></p> "
},
{
 "tags": ["Hooke's law"],
 "question_id":96109,
 "title": "96-S1-Q9",
 "body": "Bungee jumping, ravine, modulus of elasticity, maximum speed.  <p><img src=\"/database/db/96/96-S1-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1996 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/96/96-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/96/96-S1.tex\"></a></p> "
},
{
 "tags": ["Collision"],
 "question_id":96110,
 "title": "96-S1-Q10",
 "body": "Kinetic energy, spaceship, relative speed, explosion.  <p><img src=\"/database/db/96/96-S1-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1996 Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/96/96-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/96/96-S1.tex\"></a></p> "
},
{
 "tags": ["Projectile motion"],
 "question_id":96111,
 "title": "96-S1-Q11",
 "body": "Angle of projection, speed of projection.  <p><img src=\"/database/db/96/96-S1-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1996 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/96/96-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/96/96-S1.tex\"></a></p> "
},
{
 "tags": ["Combinatorics"],
 "question_id":96112,
 "title": "96-S1-Q12",
 "body": "Binomial coefficients, exam scripts, expectation, C1.  <p><img src=\"/database/db/96/96-S1-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1996 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/96/96-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/96/96-S1.tex\"></a></p> "
},
{
 "tags": ["Discrete random variable"],
 "question_id":96113,
 "title": "96-S1-Q13",
 "body": "Expectation and variance, Penny Black stamp. <p><img src=\"/database/db/96/96-S1-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1996 Question 13 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/96/96-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/96/96-S1.tex\"></a></p> "
},
{
 "tags": ["Coin toss"],
 "question_id":96114,
 "title": "96-S1-Q14",
 "body": "Biased coin, successive, conditional probability, C1.  <p><img src=\"/database/db/96/96-S1-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1996 Question 14 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/96/96-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/96/96-S1.tex\"></a></p> "
},
{
 "tags": ["Binomial expansion"],
 "question_id":96201,
 "title": "96-S2-Q1",
 "body": "Binomial coefficients.  <p><img src=\"/database/db/96/96-S2-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1996 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/96/96-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/96/96-S2.tex\"></a></p> "
},
{
 "tags": ["Simultaneous equations"],
 "question_id":96202,
 "title": "96-S2-Q2",
 "body": "Linear system, C1.  <p><img src=\"/database/db/96/96-S2-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1996 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/96/96-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/96/96-S2.tex\"></a></p> "
},
{
 "tags": ["Fibonacci number"],
 "question_id":96203,
 "title": "96-S2-Q3",
 "body": "General formula, proof by induction.  <p><img src=\"/database/db/96/96-S2-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1996 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/96/96-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/96/96-S2.tex\"></a></p> "
},
{
 "tags": ["Integral"],
 "question_id":96204,
 "title": "96-S2-Q4",
 "body": "Change of variable, trigonometry, cosine, integral.  <p><img src=\"/database/db/96/96-S2-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1996 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/96/96-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/96/96-S2.tex\"></a></p> "
},
{
 "tags": ["Complex numbers"],
 "question_id":96205,
 "title": "96-S2-Q5",
 "body": "Quartic equations, root of unity.  <p><img src=\"/database/db/96/96-S2-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1996 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/96/96-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/96/96-S2.tex\"></a></p> "
},
{
 "tags": ["Number theory"],
 "question_id":96206,
 "title": "96-S2-Q6",
 "body": "Proper factor, prime factorisation, C1.  <p><img src=\"/database/db/96/96-S2-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1996 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/96/96-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/96/96-S2.tex\"></a></p> "
},
{
 "tags": ["Euclidean geometry"],
 "question_id":96207,
 "title": "96-S2-Q7",
 "body": "Square, perpendicular distance, straight line, circle, solutions.  <p><img src=\"/database/db/96/96-S2-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1996 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/96/96-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/96/96-S2.tex\"></a></p> "
},
{
 "tags": ["Differential equation"],
 "question_id":96208,
 "title": "96-S2-Q8",
 "body": "Functional equation, trigonometry, initial condition.  <p><img src=\"/database/db/96/96-S2-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1996 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/96/96-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/96/96-S2.tex\"></a></p> "
},
{
 "tags": ["Centre of mass"],
 "question_id":96209,
 "title": "96-S2-Q9",
 "body": "Child's toy, hemisphere, surface, equilibrium, centre of gravity.  <p><img src=\"/database/db/96/96-S2-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1996 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/96/96-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/96/96-S2.tex\"></a></p> "
},
{
 "tags": ["Circular motion"],
 "question_id":96210,
 "title": "96-S2-Q10",
 "body": "Rhode Island Red and the Henhouse of Doom, fairground wheel, maximum.  <p><img src=\"/database/db/96/96-S2-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1996 Question 10 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/96/96-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/96/96-S2.tex\"></a></p> "
},
{
 "tags": ["SHM"],
 "question_id":96211,
 "title": "96-S2-Q11",
 "body": "Simple harmonic motion, ceiling, second order equation, amplitude of oscillation  <p><img src=\"/database/db/96/96-S2-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1996 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/96/96-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/96/96-S2.tex\"></a></p> "
},
{
 "tags": ["Pdf"],
 "question_id":96212,
 "title": "96-S2-Q12",
 "body": "Probabiltiy density function, uniform distribution, variance, expectation, exponential distribution.  <p><img src=\"/database/db/96/96-S2-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1996 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/96/96-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/96/96-S2.tex\"></a></p> "
},
{
 "tags": ["Binomial distribution"],
 "question_id":96213,
 "title": "96-S2-Q13",
 "body": "Binomial coefficients, sum, Triposville, elementary probability, conditional probability.  <p><img src=\"/database/db/96/96-S2-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1996 Question 13 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/96/96-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/96/96-S2.tex\"></a></p> "
},
{
 "tags": ["Continuous random variable"],
 "question_id":96214,
 "title": "96-S2-Q14",
 "body": "Uniform distribution, expectation, moments, inequality, approximation.  <p><img src=\"/database/db/96/96-S2-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1996 Question 14 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/96/96-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/96/96-S2.tex\"></a></p> "
},
{
 "tags": ["Hyperbolic functions"],
 "question_id":96301,
 "title": "96-S3-Q1",
 "body": "Sum, identity, definition.  <p><img src=\"/database/db/96/96-S3-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1996 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/96/96-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/96/96-S3.tex\"></a></p> "
},
{
 "tags": ["Simultaneous equations"],
 "question_id":96302,
 "title": "96-S3-Q2",
 "body": "Linear system, proof, C1.  <p><img src=\"/database/db/96/96-S3-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1996 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/96/96-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/96/96-S3.tex\"></a></p> "
},
{
 "tags": ["Integral"],
 "question_id":96303,
 "title": "96-S3-Q3",
 "body": "Integration by substitution, arctan, trigonometry.  <p><img src=\"/database/db/96/96-S3-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1996 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/96/96-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/96/96-S3.tex\"></a></p> "
},
{
 "tags": ["Number theory"],
 "question_id":96304,
 "title": "96-S3-Q4",
 "body": "Inequality, sum, largest product, proof, C1.  <p><img src=\"/database/db/96/96-S3-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1996 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/96/96-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/96/96-S3.tex\"></a></p> "
},
{
 "tags": ["Complex numbers"],
 "question_id":96305,
 "title": "96-S3-Q5",
 "body": "de Moivre's theorem, tangent identity, sum, cubic equation, roots of unity.  <p><img src=\"/database/db/96/96-S3-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1996 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/96/96-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/96/96-S3.tex\"></a></p> "
},
{
 "tags": ["Groups"],
 "question_id":96306,
 "title": "96-S3-Q6",
 "body": "Group of matrices, singular matrix, determinant.  <p><img src=\"/database/db/96/96-S3-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1996 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/96/96-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/96/96-S3.tex\"></a></p> "
},
{
 "tags": ["Area and perimeters"],
 "question_id":96307,
 "title": "96-S3-Q7",
 "body": "Simultaneous equations, roots of polynomials, area of triangle, semi-perimeter, heron, cubic equation, C1.  <p><img src=\"/database/db/96/96-S3-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1996 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/96/96-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/96/96-S3.tex\"></a></p> "
},
{
 "tags": ["Transformation"],
 "question_id":96308,
 "title": "96-S3-Q8",
 "body": "Mobius transformation, inverse operation, composition, identity, C1.  <p><img src=\"/database/db/96/96-S3-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1996 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/96/96-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/96/96-S3.tex\"></a></p> "
},
{
 "tags": ["Centre of mass"],
 "question_id":96309,
 "title": "96-S3-Q9",
 "body": "Sphere, small displacement, perturbation.  <p><img src=\"/database/db/96/96-S3-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1996 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/96/96-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/96/96-S3.tex\"></a></p> "
},
{
 "tags": ["Friction"],
 "question_id":96310,
 "title": "96-S3-Q10",
 "body": "Circular cylinders, coefficient of friction, equilibrium, inequalities.  <p><img src=\"/database/db/96/96-S3-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1996 Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/96/96-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/96/96-S3.tex\"></a></p> "
},
{
 "tags": ["SHM"],
 "question_id":96311,
 "title": "96-S3-Q11",
 "body": "Simple harmonic motion, circular wire, second order equation, equilibrium, period of oscillation, displacement.  <p><img src=\"/database/db/96/96-S3-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1996 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/96/96-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/96/96-S3.tex\"></a></p> "
},
{
 "tags": ["Markov chains"],
 "question_id":96312,
 "title": "96-S3-Q12",
 "body": "Professor Ecks, proving theorem, matrices.  <p><img src=\"/database/db/96/96-S3-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1996 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/96/96-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/96/96-S3.tex\"></a></p> "
},
{
 "tags": ["Chebyshev's inequality"],
 "question_id":96313,
 "title": "96-S3-Q13",
 "body": "Random variables, expectation and variance, linearity, inequalities.  <p><img src=\"/database/db/96/96-S3-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1996 Question 13 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/96/96-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/96/96-S3.tex\"></a></p> "
},
{
 "tags": ["Differential equation"],
 "question_id":96314,
 "title": "96-S3-Q14",
 "body": "Bike, puncture, first order equation, approximation.  <p><img src=\"/database/db/96/96-S3-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1996 Question 14 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/96/96-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/96/96-S3.tex\"></a></p> "
},
{
 "tags": ["Combinatorics"],
 "question_id":97101,
 "title": "97-S1-Q1",
 "body": "10 and 20 pence coins, number of ways, C1.  <p><img src=\"/database/db/97/97-S1-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1997 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/97/97-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/97/97-S1.tex\"></a></p> "
},
{
 "tags": ["Differentiation"],
 "question_id":97102,
 "title": "97-S1-Q2",
 "body": "Trigonometry, identity, chain rule, implicit differentiation.  <p><img src=\"/database/db/97/97-S1-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1997 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/97/97-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/97/97-S1.tex\"></a></p> "
},
{
 "tags": ["Sequences"],
 "question_id":97103,
 "title": "97-S1-Q3",
 "body": "Recurrence relation, decimal places, digit, numbers, C1.  <p><img src=\"/database/db/97/97-S1-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1997 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/97/97-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/97/97-S1.tex\"></a></p> "
},
{
 "tags": ["Modulus function"],
 "question_id":97104,
 "title": "97-S1-Q4",
 "body": "Roots of equations, C1.  <p><img src=\"/database/db/97/97-S1-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1997 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/97/97-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/97/97-S1.tex\"></a></p> "
},
{
 "tags": ["Euclidean geometry"],
 "question_id":97105,
 "title": "97-S1-Q5",
 "body": "Quadrilateral, midpoints, constant, vertices, C1.  <p><img src=\"/database/db/97/97-S1-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1997 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/97/97-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/97/97-S1.tex\"></a></p> "
},
{
 "tags": ["Analysis"],
 "question_id":97106,
 "title": "97-S1-Q6",
 "body": "Factorisation, algebraic manipulation, integration, inequality, C1.  <p><img src=\"/database/db/97/97-S1-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1997 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/97/97-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/97/97-S1.tex\"></a></p> "
},
{
 "tags": ["Cubic polynomial"],
 "question_id":97107,
 "title": "97-S1-Q7",
 "body": "Integration.  <p><img src=\"/database/db/97/97-S1-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1997 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/97/97-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/97/97-S1.tex\"></a></p> "
},
{
 "tags": ["Curve sketching"],
 "question_id":97108,
 "title": "97-S1-Q8",
 "body": "Roots of equation, logarithmic function.  <p><img src=\"/database/db/97/97-S1-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1997 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/97/97-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/97/97-S1.tex\"></a></p> "
},
{
 "tags": ["How does a chicken cross the road?"],
 "question_id":97109,
 "title": "97-S1-Q9",
 "body": "Successive car width, chicken, inequality, time-distance, C1.  <p><img src=\"/database/db/97/97-S1-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1997 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/97/97-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/97/97-S1.tex\"></a></p> "
},
{
 "tags": ["Circular motion"],
 "question_id":97110,
 "title": "97-S1-Q10",
 "body": "Horizontal circle, tension in string.  <p><img src=\"/database/db/97/97-S1-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1997 Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/97/97-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/97/97-S1.tex\"></a></p> "
},
{
 "tags": ["Projectile motion"],
 "question_id":97111,
 "title": "97-S1-Q11",
 "body": "First order differential equation, maximum height, velocity.  <p><img src=\"/database/db/97/97-S1-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1997 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/97/97-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/97/97-S1.tex\"></a></p> "
},
{
 "tags": ["Uniform distribution"],
 "question_id":97112,
 "title": "97-S1-Q12",
 "body": "Root of quadratic, expectation and variance, sum of random variable, probability.  <p><img src=\"/database/db/97/97-S1-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1997 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/97/97-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/97/97-S1.tex\"></a></p> "
},
{
 "tags": ["Elementary probability"],
 "question_id":97113,
 "title": "97-S1-Q13",
 "body": "Bond, assasin, tree diagram, C1. <p><img src=\"/database/db/97/97-S1-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1997 Question 13 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/97/97-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/97/97-S1.tex\"></a></p> "
},
{
 "tags": ["Continuous random variable"],
 "question_id":97114,
 "title": "97-S1-Q14",
 "body": "Maximum flood, cost, expected cost, logarithm function.  <p><img src=\"/database/db/97/97-S1-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1997 Question 14 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/97/97-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/97/97-S1.tex\"></a></p> "
},
{
 "tags": ["Number theory"],
 "question_id":97201,
 "title": "97-S2-Q1",
 "body": "Sum of numbers, digits, product of primes, C1.  <p><img src=\"/database/db/97/97-S2-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1997 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/97/97-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/97/97-S2.tex\"></a></p> "
},
{
 "tags": ["Proof by induction"],
 "question_id":97202,
 "title": "97-S2-Q2",
 "body": "Iteration, proof.  <p><img src=\"/database/db/97/97-S2-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1997 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/97/97-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/97/97-S2.tex\"></a></p> "
},
{
 "tags": ["Integral"],
 "question_id":97203,
 "title": "97-S2-Q3",
 "body": "Integration by partial fractions, arctan, logarithm.  <p><img src=\"/database/db/97/97-S2-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1997 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/97/97-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/97/97-S2.tex\"></a></p> "
},
{
 "tags": ["Polynomials"],
 "question_id":97204,
 "title": "97-S2-Q4",
 "body": "Factors of polynomials, divisibility, degree, C1.  <p><img src=\"/database/db/97/97-S2-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1997 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/97/97-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/97/97-S2.tex\"></a></p> "
},
{
 "tags": ["Complex numbers"],
 "question_id":97205,
 "title": "97-S2-Q5",
 "body": "Locus, subset, regions of Argand diagram.  <p><img src=\"/database/db/97/97-S2-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1997 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/97/97-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/97/97-S2.tex\"></a></p> "
},
{
 "tags": ["Trigonometry"],
 "question_id":97206,
 "title": "97-S2-Q6",
 "body": "Trigonometric identity, solution of equations, rational, inequality.  <p><img src=\"/database/db/97/97-S2-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1997 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/97/97-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/97/97-S2.tex\"></a></p> "
},
{
 "tags": ["Curve sketching"],
 "question_id":97207,
 "title": "97-S2-Q7",
 "body": "Differentiation, maximum, minimum, C1.  <p><img src=\"/database/db/97/97-S2-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1997 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/97/97-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/97/97-S2.tex\"></a></p> "
},
{
 "tags": ["Inequalities"],
 "question_id":97208,
 "title": "97-S2-Q8",
 "body": "Integration.  <p><img src=\"/database/db/97/97-S2-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1997 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/97/97-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/97/97-S2.tex\"></a></p> "
},
{
 "tags": ["Friction"],
 "question_id":97209,
 "title": "97-S2-Q9",
 "body": "Coefficient of friction, solid sphere, no slip, horizontal force.  <p><img src=\"/database/db/97/97-S2-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1997 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/97/97-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/97/97-S2.tex\"></a></p> "
},
{
 "tags": ["Collision"],
 "question_id":97210,
 "title": "97-S2-Q10",
 "body": "Coefficient of restitution, elastic collision, coalesce, energy, explosion.  <p><img src=\"/database/db/97/97-S2-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1997 Question 10 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/97/97-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/97/97-S2.tex\"></a></p> "
},
{
 "tags": ["Projectile motion"],
 "question_id":97211,
 "title": "97-S2-Q11",
 "body": "Tennis player, angle and velocity, lower bound for serve.  <p><img src=\"/database/db/97/97-S2-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1997 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/97/97-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/97/97-S2.tex\"></a></p> "
},
{
 "tags": ["Binomial expansion"],
 "question_id":97212,
 "title": "97-S2-Q12",
 "body": "Cambridge Whispers, elementary probability.  <p><img src=\"/database/db/97/97-S2-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1997 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/97/97-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/97/97-S2.tex\"></a></p> "
},
{
 "tags": ["Geometrical probability"],
 "question_id":97213,
 "title": "97-S2-Q13",
 "body": "Buffon's needle, continuous random variable, cumulative distribution function, lines.  <p><img src=\"/database/db/97/97-S2-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1997 Question 13 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/97/97-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/97/97-S2.tex\"></a></p> "
},
{
 "tags": ["Poisson distribution"],
 "question_id":97214,
 "title": "97-S2-Q14",
 "body": "Traffic, tunnel, expectation.  <p><img src=\"/database/db/97/97-S2-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1997 Question 14 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/97/97-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/97/97-S2.tex\"></a></p> "
},
{
 "tags": ["Taylor series"],
 "question_id":97301,
 "title": "97-S3-Q1",
 "body": "Exponential function, Maclaurin series.  <p><img src=\"/database/db/97/97-S3-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1997 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/97/97-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/97/97-S3.tex\"></a></p> "
},
{
 "tags": ["Curve sketching"],
 "question_id":97302,
 "title": "97-S3-Q2",
 "body": "Logarithmic and exponential function, maximum, differentiation, root of equation, C1.  <p><img src=\"/database/db/97/97-S3-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1997 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/97/97-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/97/97-S3.tex\"></a></p> "
},
{
 "tags": ["Complex numbers"],
 "question_id":97303,
 "title": "97-S3-Q3",
 "body": "Roots of unity, points around a circle, coordinate geometry.  <p><img src=\"/database/db/97/97-S3-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1997 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/97/97-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/97/97-S3.tex\"></a></p> "
},
{
 "tags": ["AM-GM inequality"],
 "question_id":97304,
 "title": "97-S3-Q4",
 "body": "Roots of cubic equations, coefficient, differentiation, C1.  <p><img src=\"/database/db/97/97-S3-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1997 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/97/97-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/97/97-S3.tex\"></a></p> "
},
{
 "tags": ["Surface of revolution"],
 "question_id":97305,
 "title": "97-S3-Q5",
 "body": "Ratio, distance of wheel rolling, integration.  <p><img src=\"/database/db/97/97-S3-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1997 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/97/97-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/97/97-S3.tex\"></a></p> "
},
{
 "tags": ["Differential equation"],
 "question_id":97306,
 "title": "97-S3-Q6",
 "body": "Harmonic oscillator, second order equation, recurrence relation, difference equation.  <p><img src=\"/database/db/97/97-S3-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1997 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/97/97-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/97/97-S3.tex\"></a></p> "
},
{
 "tags": ["e is irrational"],
 "question_id":97307,
 "title": "97-S3-Q7",
 "body": "Proof, integer parts, inequality, C1.  <p><img src=\"/database/db/97/97-S3-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1997 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/97/97-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/97/97-S3.tex\"></a></p> "
},
{
 "tags": ["Transformations"],
 "question_id":97308,
 "title": "97-S3-Q8",
 "body": "Diagonal matrix, matrix of rotation, ellipse, diagonalise.  <p><img src=\"/database/db/97/97-S3-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1997 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/97/97-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/97/97-S3.tex\"></a></p> "
},
{
 "tags": ["Hooke's law"],
 "question_id":97309,
 "title": "97-S3-Q9",
 "body": "Ratio of stretched and unstretched springs.  <p><img src=\"/database/db/97/97-S3-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1997 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/97/97-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/97/97-S3.tex\"></a></p> "
},
{
 "tags": ["Circular motion"],
 "question_id":97310,
 "title": "97-S3-Q10",
 "body": "Friction, spherical marble on horizontal table.  <p><img src=\"/database/db/97/97-S3-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1997 Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/97/97-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/97/97-S3.tex\"></a></p> "
},
{
 "tags": ["Equilibrium"],
 "question_id":97311,
 "title": "97-S3-Q11",
 "body": "Symmetrical bell and clapper, angle vith vertical.  <p><img src=\"/database/db/97/97-S3-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1997 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/97/97-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/97/97-S3.tex\"></a></p> "
},
{
 "tags": ["Coin toss"],
 "question_id":97312,
 "title": "97-S3-Q12",
 "body": "Biased coin, probability generating function, pgf, expectation and variance, sample cards, normal approximation, harmonic series.  <p><img src=\"/database/db/97/97-S3-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1997 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/97/97-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/97/97-S3.tex\"></a></p> "
},
{
 "tags": ["Pdf,","Mgf"],
 "question_id":97313,
 "title": "97-S3-Q13",
 "body": "Probability density and moment generating functions, expectation, normal distribution.  <p><img src=\"/database/db/97/97-S3-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1997 Question 13 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/97/97-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/97/97-S3.tex\"></a></p> "
},
{
 "tags": ["Independence"],
 "question_id":97314,
 "title": "97-S3-Q14",
 "body": "Mean and variance, industrial process, standard deviation, area and perimeter.  <p><img src=\"/database/db/97/97-S3-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1997 Question 14 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/97/97-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/97/97-S3.tex\"></a></p> "
},
{
 "tags": ["Numbers"],
 "question_id":98101,
 "title": "98-S1-Q1",
 "body": "Integers, digits, number of, C1.  <p><img src=\"/database/db/98/98-S1-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1998 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/98/98-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/98/98-S1.tex\"></a></p> "
},
{
 "tags": ["Integration by substitution"],
 "question_id":98102,
 "title": "98-S1-Q2",
 "body": "  <p><img src=\"/database/db/98/98-S1-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1998 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/98/98-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/98/98-S1.tex\"></a></p> "
},
{
 "tags": ["Proof"],
 "question_id":98103,
 "title": "98-S1-Q3",
 "body": "Statements, proof, polynomials, trigonometry, inequality, logarithmic functions.  <p><img src=\"/database/db/98/98-S1-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1998 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/98/98-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/98/98-S1.tex\"></a></p> "
},
{
 "tags": ["Optimisation"],
 "question_id":98104,
 "title": "98-S1-Q4",
 "body": "Differentiation, rectangle inscribed in circle, greatest, maximum, perimeter, sum of lengths, proof, C1.  <p><img src=\"/database/db/98/98-S1-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1998 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/98/98-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/98/98-S1.tex\"></a></p> "
},
{
 "tags": ["Complex numbers"],
 "question_id":98105,
 "title": "98-S1-Q5",
 "body": "Argand diagram, six-sided polygon.  <p><img src=\"/database/db/98/98-S1-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1998 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/98/98-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/98/98-S1.tex\"></a></p> "
},
{
 "tags": ["Recurrence relation"],
 "question_id":98106,
 "title": "98-S1-Q6",
 "body": "Difference equation, trigonometry.  <p><img src=\"/database/db/98/98-S1-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1998 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/98/98-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/98/98-S1.tex\"></a></p> "
},
{
 "tags": ["Geometric sequences"],
 "question_id":98107,
 "title": "98-S1-Q7",
 "body": "Bank, interest, deposit, financial, C1.  <p><img src=\"/database/db/98/98-S1-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1998 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/98/98-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/98/98-S1.tex\"></a></p> "
},
{
 "tags": ["Fluid dynamics"],
 "question_id":98108,
 "title": "98-S1-Q8",
 "body": "Differential equations, volume flux, second order equation.  <p><img src=\"/database/db/98/98-S1-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1998 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/98/98-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/98/98-S1.tex\"></a></p> "
},
{
 "tags": ["Collision"],
 "question_id":98109,
 "title": "98-S1-Q9",
 "body": "Coefficient of resitution, spheres.  <p><img src=\"/database/db/98/98-S1-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1998 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/98/98-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/98/98-S1.tex\"></a></p> "
},
{
 "tags": ["Projectile motion"],
 "question_id":98110,
 "title": "98-S1-Q10",
 "body": "Shell, greatest height, maximum, distance.  <p><img src=\"/database/db/98/98-S1-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1998 Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/98/98-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/98/98-S1.tex\"></a></p> "
},
{
 "tags": ["Pulley"],
 "question_id":98111,
 "title": "98-S1-Q11",
 "body": "Hank's Gold mine, maximum, differentiation.  <p><img src=\"/database/db/98/98-S1-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1998 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/98/98-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/98/98-S1.tex\"></a></p> "
},
{
 "tags": ["Algebraic probability"],
 "question_id":98112,
 "title": "98-S1-Q12",
 "body": "Independence, solution to equation, divisibility.  <p><img src=\"/database/db/98/98-S1-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1998 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/98/98-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/98/98-S1.tex\"></a></p> "
},
{
 "tags": ["Sampling with replacement"],
 "question_id":98113,
 "title": "98-S1-Q13",
 "body": "Elementary probability, C1. <p><img src=\"/database/db/98/98-S1-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1998 Question 13 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/98/98-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/98/98-S1.tex\"></a></p> "
},
{
 "tags": ["Continuous random variable"],
 "question_id":98114,
 "title": "98-S1-Q14",
 "body": "Geometrical probability, Genland, Slihing, tax on yaks, expectation.  <p><img src=\"/database/db/98/98-S1-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1998 Question 14 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/98/98-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/98/98-S1.tex\"></a></p> "
},
{
 "tags": ["Number theory"],
 "question_id":98201,
 "title": "98-S2-Q1",
 "body": "Cubic equation, factors, integer solution to equation, C1.  <p><img src=\"/database/db/98/98-S2-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1998 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/98/98-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/98/98-S2.tex\"></a></p> "
},
{
 "tags": ["Binomial expansion"],
 "question_id":98202,
 "title": "98-S2-Q2",
 "body": "Approximation to square roots.  <p><img src=\"/database/db/98/98-S2-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1998 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/98/98-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/98/98-S2.tex\"></a></p> "
},
{
 "tags": ["Analysis"],
 "question_id":98203,
 "title": "98-S2-Q3",
 "body": "Telescoping sum, limit, ratio of terms.  <p><img src=\"/database/db/98/98-S2-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1998 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/98/98-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/98/98-S2.tex\"></a></p> "
},
{
 "tags": ["Integration by parts"],
 "question_id":98204,
 "title": "98-S2-Q4",
 "body": "Recurrence formula, trigonometric integral.  <p><img src=\"/database/db/98/98-S2-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1998 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/98/98-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/98/98-S2.tex\"></a></p> "
},
{
 "tags": ["Complex numbers"],
 "question_id":98205,
 "title": "98-S2-Q5",
 "body": "Triangle inequality, induction, roots of equation, geometry.  <p><img src=\"/database/db/98/98-S2-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1998 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/98/98-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/98/98-S2.tex\"></a></p> "
},
{
 "tags": ["Parametric equations"],
 "question_id":98206,
 "title": "98-S2-Q6",
 "body": "Curve sketching, normal and tangent.  <p><img src=\"/database/db/98/98-S2-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1998 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/98/98-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/98/98-S2.tex\"></a></p> "
},
{
 "tags": ["Functions"],
 "question_id":98207,
 "title": "98-S2-Q7",
 "body": "Differentiation, maximum, minimum, inequality, trigonometric functions.  <p><img src=\"/database/db/98/98-S2-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1998 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/98/98-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/98/98-S2.tex\"></a></p> "
},
{
 "tags": ["Vector geometry"],
 "question_id":98208,
 "title": "98-S2-Q8",
 "body": "3D, triangle, plane, midpoint, line meet plane.  <p><img src=\"/database/db/98/98-S2-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1998 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/98/98-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/98/98-S2.tex\"></a></p> "
},
{
 "tags": ["Centre of mass"],
 "question_id":98209,
 "title": "98-S2-Q9",
 "body": "Equilibrium, planar hexagon framework, suspended, diagram.  <p><img src=\"/database/db/98/98-S2-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1998 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/98/98-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/98/98-S2.tex\"></a></p> "
},
{
 "tags": ["Wedge"],
 "question_id":98210,
 "title": "98-S2-Q10",
 "body": "CConservation of momentum and energy, inclined surface, differential equation, mechanical principles.  <p><img src=\"/database/db/98/98-S2-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1998 Question 10 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/98/98-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/98/98-S2.tex\"></a></p> "
},
{
 "tags": ["Projectile motion"],
 "question_id":98211,
 "title": "98-S2-Q11",
 "body": "Cricket, fielder, batsman, constant angle.  <p><img src=\"/database/db/98/98-S2-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1998 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/98/98-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/98/98-S2.tex\"></a></p> "
},
{
 "tags": ["Mathematitis"],
 "question_id":98212,
 "title": "98-S2-Q12",
 "body": "AL, STEP, tree diagram, sufferer C1.  <p><img src=\"/database/db/98/98-S2-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1998 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/98/98-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/98/98-S2.tex\"></a></p> "
},
{
 "tags": ["Continuous random variable"],
 "question_id":98213,
 "title": "98-S2-Q13",
 "body": "Conditional probability, serve customer, independent.  <p><img src=\"/database/db/98/98-S2-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1998 Question 13 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/98/98-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/98/98-S2.tex\"></a></p> "
},
{
 "tags": ["Poisson distribution"],
 "question_id":98214,
 "title": "98-S2-Q14",
 "body": "Catastrophe college, Dr Doom, inequality.  <p><img src=\"/database/db/98/98-S2-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1998 Question 14 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/98/98-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/98/98-S2.tex\"></a></p> "
},
{
 "tags": ["Curve sketching"],
 "question_id":98301,
 "title": "98-S3-Q1",
 "body": "Trigonometry, differentiation, stationary points.  <p><img src=\"/database/db/98/98-S3-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1998 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/98/98-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/98/98-S3.tex\"></a></p> "
},
{
 "tags": ["Integral"],
 "question_id":98302,
 "title": "98-S3-Q2",
 "body": "Beta function, integration by parts, recurrence formula.  <p><img src=\"/database/db/98/98-S3-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1998 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/98/98-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/98/98-S3.tex\"></a></p> "
},
{
 "tags": ["Difference equation"],
 "question_id":98303,
 "title": "98-S3-Q3",
 "body": "Bank bond, power law solution substitution, limit, C1.  <p><img src=\"/database/db/98/98-S3-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1998 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/98/98-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/98/98-S3.tex\"></a></p> "
},
{
 "tags": ["Polar coordinates"],
 "question_id":98304,
 "title": "98-S3-Q4",
 "body": "Curve sketching, circles, area enclosed by curve, integration.  <p><img src=\"/database/db/98/98-S3-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1998 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/98/98-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/98/98-S3.tex\"></a></p> "
},
{
 "tags": ["Matrices"],
 "question_id":98305,
 "title": "98-S3-Q5",
 "body": "Exponential of square matrix, geometry.  <p><img src=\"/database/db/98/98-S3-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1998 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/98/98-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/98/98-S3.tex\"></a></p> "
},
{
 "tags": ["Elementary geometry"],
 "question_id":98306,
 "title": "98-S3-Q6",
 "body": "Cube, tetrahedron, polyhedra, octahedron, vertices, faces, volume, edges, C1.  <p><img src=\"/database/db/98/98-S3-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1998 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/98/98-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/98/98-S3.tex\"></a></p> "
},
{
 "tags": ["Curve sketching"],
 "question_id":98307,
 "title": "98-S3-Q7",
 "body": "Differentiation, stationary points, statistical physics, integral.  <p><img src=\"/database/db/98/98-S3-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1998 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/98/98-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/98/98-S3.tex\"></a></p> "
},
{
 "tags": ["Vector geometry"],
 "question_id":98308,
 "title": "98-S3-Q8",
 "body": "Line intersecting spheres, inequality, minimum distance.  <p><img src=\"/database/db/98/98-S3-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1998 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/98/98-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/98/98-S3.tex\"></a></p> "
},
{
 "tags": ["SHM"],
 "question_id":98309,
 "title": "98-S3-Q9",
 "body": "Period of simple harmonic motion, moment of inertia, circular cone.  <p><img src=\"/database/db/98/98-S3-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1998 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/98/98-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/98/98-S3.tex\"></a></p> "
},
{
 "tags": ["Collision"],
 "question_id":98310,
 "title": "98-S3-Q10",
 "body": "Conservation of momentum and energy, coeffcient of restitution.  <p><img src=\"/database/db/98/98-S3-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1998 Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/98/98-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/98/98-S3.tex\"></a></p> "
},
{
 "tags": ["Real pendulum"],
 "question_id":98311,
 "title": "98-S3-Q11",
 "body": "Binomial expansion, equation of motion, period, integration by substitution.  <p><img src=\"/database/db/98/98-S3-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1998 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/98/98-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/98/98-S3.tex\"></a></p> "
},
{
 "tags": ["Elementary probability"],
 "question_id":98312,
 "title": "98-S3-Q12",
 "body": "Mountain villages, tetrahedron, snowfall, C1.  <p><img src=\"/database/db/98/98-S3-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1998 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/98/98-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/98/98-S3.tex\"></a></p> "
},
{
 "tags": ["MLE"],
 "question_id":98313,
 "title": "98-S3-Q13",
 "body": "Maximum likelihood estimator, coin toss, C1.  <p><img src=\"/database/db/98/98-S3-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1998 Question 13 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/98/98-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/98/98-S3.tex\"></a></p> "
},
{
 "tags": ["Uniform distribution"],
 "question_id":98314,
 "title": "98-S3-Q14",
 "body": "Submarines, max, sum of random variables, estimator, expectation and variances.  <p><img src=\"/database/db/98/98-S3-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1998 Question 14 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/98/98-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/98/98-S3.tex\"></a></p> "
},
{
 "tags": ["Number theory"],
 "question_id":99101,
 "title": "99-S1-Q1",
 "body": "Divisibility, average value, C1.  <p><img src=\"/database/db/99/99-S1-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1999 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/99/99-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/99/99-S1.tex\"></a></p> "
},
{
 "tags": ["Coordinate geometry"],
 "question_id":99102,
 "title": "99-S1-Q2",
 "body": "Sum of squares, centroid, C1  <p><img src=\"/database/db/99/99-S1-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1999 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/99/99-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/99/99-S1.tex\"></a></p> "
},
{
 "tags": ["Recurrence relation"],
 "question_id":99103,
 "title": "99-S1-Q3",
 "body": "Proof, inequality, C1.  <p><img src=\"/database/db/99/99-S1-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1999 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/99/99-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/99/99-S1.tex\"></a></p> "
},
{
 "tags": ["Curve sketching"],
 "question_id":99104,
 "title": "99-S1-Q4",
 "body": "Modulus function, inequality, C1.  <p><img src=\"/database/db/99/99-S1-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1999 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/99/99-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/99/99-S1.tex\"></a></p> "
},
{
 "tags": ["Approximation"],
 "question_id":99105,
 "title": "99-S1-Q5",
 "body": "Small angle approximation, cartesian coordinates, satellites, general relativity, earth, C1.  <p><img src=\"/database/db/99/99-S1-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1999 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/99/99-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/99/99-S1.tex\"></a></p> "
},
{
 "tags": ["Inequality"],
 "question_id":99106,
 "title": "99-S1-Q6",
 "body": "Maximum and minimum, quadratic equation, C1.  <p><img src=\"/database/db/99/99-S1-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1999 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/99/99-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/99/99-S1.tex\"></a></p> "
},
{
 "tags": ["Differential equation"],
 "question_id":99107,
 "title": "99-S1-Q7",
 "body": "Trigonometry, second order equation.  <p><img src=\"/database/db/99/99-S1-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1999 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/99/99-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/99/99-S1.tex\"></a></p> "
},
{
 "tags": ["Analysis"],
 "question_id":99108,
 "title": "99-S1-Q8",
 "body": "Inequality, integral, logarithm function, harmonic series, sum, limit.  <p><img src=\"/database/db/99/99-S1-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1999 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/99/99-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/99/99-S1.tex\"></a></p> "
},
{
 "tags": ["Time-distance"],
 "question_id":99109,
 "title": "99-S1-Q9",
 "body": "Tortoise, hare, C1.  <p><img src=\"/database/db/99/99-S1-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1999 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/99/99-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/99/99-S1.tex\"></a></p> "
},
{
 "tags": ["SHM"],
 "question_id":99110,
 "title": "99-S1-Q10",
 "body": "Simple harmonic motion, period.  <p><img src=\"/database/db/99/99-S1-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1999 Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/99/99-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/99/99-S1.tex\"></a></p> "
},
{
 "tags": ["Gravitational attraction"],
 "question_id":99111,
 "title": "99-S1-Q11",
 "body": "Inverse square law, Krypton, starmaker, centre of mass.  <p><img src=\"/database/db/99/99-S1-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1999 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/99/99-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/99/99-S1.tex\"></a></p> "
},
{
 "tags": ["Die"],
 "question_id":99112,
 "title": "99-S1-Q12",
 "body": "Sum of dice, probability, inequality, C1.  <p><img src=\"/database/db/99/99-S1-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1999 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/99/99-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/99/99-S1.tex\"></a></p> "
},
{
 "tags": ["Geometrical probability"],
 "question_id":99113,
 "title": "99-S1-Q13",
 "body": "Bar magnets, expectation and variance, continuous random variable. <p><img src=\"/database/db/99/99-S1-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1999 Question 13 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/99/99-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/99/99-S1.tex\"></a></p> "
},
{
 "tags": ["Continuous random variable"],
 "question_id":99114,
 "title": "99-S1-Q14",
 "body": "Dart throwing, expectation, total score, probability, density function.  <p><img src=\"/database/db/99/99-S1-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 1999 Question 14 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/99/99-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/99/99-S1.tex\"></a></p> "
},
{
 "tags": ["Binomial expansion"],
 "question_id":99201,
 "title": "99-S2-Q1",
 "body": "Stirling's formula, factorial, logarithm, exponentials, magnitude, C1-ish.  <p><img src=\"/database/db/99/99-S2-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1999 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/99/99-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/99/99-S2.tex\"></a></p> "
},
{
 "tags": ["Quadratic equation"],
 "question_id":99202,
 "title": "99-S2-Q2",
 "body": "Inequality, real roots, C1.  <p><img src=\"/database/db/99/99-S2-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1999 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/99/99-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/99/99-S2.tex\"></a></p> "
},
{
 "tags": ["Proof by induction"],
 "question_id":99203,
 "title": "99-S2-Q3",
 "body": "Hermite polynomial, differentiation, exponential function, coefficient.  <p><img src=\"/database/db/99/99-S2-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1999 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/99/99-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/99/99-S2.tex\"></a></p> "
},
{
 "tags": ["Binomial expansion"],
 "question_id":99204,
 "title": "99-S2-Q4",
 "body": "Sum of binomial coefficients, identity.  <p><img src=\"/database/db/99/99-S2-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1999 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/99/99-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/99/99-S2.tex\"></a></p> "
},
{
 "tags": ["Trigonometry"],
 "question_id":99205,
 "title": "99-S2-Q5",
 "body": "Solutions of trigonometric equation, inequality.  <p><img src=\"/database/db/99/99-S2-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1999 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/99/99-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/99/99-S2.tex\"></a></p> "
},
{
 "tags": ["Integral"],
 "question_id":99206,
 "title": "99-S2-Q6",
 "body": "Substitution of Mobius form, logarithm, nice trick.  <p><img src=\"/database/db/99/99-S2-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1999 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/99/99-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/99/99-S2.tex\"></a></p> "
},
{
 "tags": ["Curve sketching"],
 "question_id":99207,
 "title": "99-S2-Q7",
 "body": "Differentiation, stationary points, C1.  <p><img src=\"/database/db/99/99-S2-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1999 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/99/99-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/99/99-S2.tex\"></a></p> "
},
{
 "tags": ["Analysis"],
 "question_id":99208,
 "title": "99-S2-Q8",
 "body": "Differentiation, trigonometry, approximation, small angle.  <p><img src=\"/database/db/99/99-S2-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1999 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/99/99-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/99/99-S2.tex\"></a></p> "
},
{
 "tags": ["Differential equation"],
 "question_id":99209,
 "title": "99-S2-Q9",
 "body": "Acceleration, fragment, star, Z-universe.  <p><img src=\"/database/db/99/99-S2-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1999 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/99/99-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/99/99-S2.tex\"></a></p> "
},
{
 "tags": ["Collision"],
 "question_id":99210,
 "title": "99-S2-Q10",
 "body": "Coefficient of restitution, impact, velocity, loss of kinetic energy.  <p><img src=\"/database/db/99/99-S2-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1999 Question 10 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/99/99-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/99/99-S2.tex\"></a></p> "
},
{
 "tags": ["Projectile motion"],
 "question_id":99211,
 "title": "99-S2-Q11",
 "body": "Automated mobile dummy target for gunnery practice, circle, distance, shell.  <p><img src=\"/database/db/99/99-S2-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1999 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/99/99-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/99/99-S2.tex\"></a></p> "
},
{
 "tags": ["Micro-chip"],
 "question_id":99212,
 "title": "99-S2-Q12",
 "body": "Conditional probability, C1.  <p><img src=\"/database/db/99/99-S2-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1999 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/99/99-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/99/99-S2.tex\"></a></p> "
},
{
 "tags": ["Geometrical probability"],
 "question_id":99213,
 "title": "99-S2-Q13",
 "body": "Stick, broken, pieces, expectation and variance, pdf, probability density function.  <p><img src=\"/database/db/99/99-S2-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1999 Question 13 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/99/99-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/99/99-S2.tex\"></a></p> "
},
{
 "tags": ["Die"],
 "question_id":99214,
 "title": "99-S2-Q14",
 "body": "Six-sided fair dice, strategy, maximise, expectation, C1.  <p><img src=\"/database/db/99/99-S2-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 1999 Question 14 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/99/99-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/99/99-S2.tex\"></a></p> "
},
{
 "tags": ["Cubic equation"],
 "question_id":99301,
 "title": "99-S3-Q1",
 "body": "Roots of equation, geometric progression, polynomial, C1.  <p><img src=\"/database/db/99/99-S3-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1999 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/99/99-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/99/99-S3.tex\"></a></p> "
},
{
 "tags": ["Curve sketching"],
 "question_id":99302,
 "title": "99-S3-Q2",
 "body": "Transcendental equation, inequality, roots of equation, differentiation.  <p><img src=\"/database/db/99/99-S3-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1999 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/99/99-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/99/99-S3.tex\"></a></p> "
},
{
 "tags": ["Limit"],
 "question_id":99303,
 "title": "99-S3-Q3",
 "body": "Integration, sum, limit.  <p><img src=\"/database/db/99/99-S3-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1999 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/99/99-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/99/99-S3.tex\"></a></p> "
},
{
 "tags": ["Elementary geometry"],
 "question_id":99304,
 "title": "99-S3-Q4",
 "body": "Euler's formula, polyhedron, edge, vertices, faces, regular, Euclidean, C1.  <p><img src=\"/database/db/99/99-S3-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1999 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/99/99-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/99/99-S3.tex\"></a></p> "
},
{
 "tags": ["Difference equation"],
 "question_id":99305,
 "title": "99-S3-Q5",
 "body": "Proof by induction.  <p><img src=\"/database/db/99/99-S3-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1999 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/99/99-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/99/99-S3.tex\"></a></p> "
},
{
 "tags": ["Parametric equation"],
 "question_id":99306,
 "title": "99-S3-Q6",
 "body": "Integration, curve sketching, area.  <p><img src=\"/database/db/99/99-S3-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1999 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/99/99-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/99/99-S3.tex\"></a></p> "
},
{
 "tags": ["Groups"],
 "question_id":99307,
 "title": "99-S3-Q7",
 "body": "Binary operation, associative, subgroup.  <p><img src=\"/database/db/99/99-S3-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1999 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/99/99-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/99/99-S3.tex\"></a></p> "
},
{
 "tags": ["Differential equation"],
 "question_id":99308,
 "title": "99-S3-Q8",
 "body": "Harmonic oscillator, sum, tirgonometry, integration, zeta function.  <p><img src=\"/database/db/99/99-S3-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1999 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/99/99-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/99/99-S3.tex\"></a></p> "
},
{
 "tags": ["Gravitational force"],
 "question_id":99309,
 "title": "99-S3-Q9",
 "body": "Shell, circular ring, attraction.  <p><img src=\"/database/db/99/99-S3-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1999 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/99/99-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/99/99-S3.tex\"></a></p> "
},
{
 "tags": ["Impulse"],
 "question_id":99310,
 "title": "99-S3-Q10",
 "body": "Momentum, integral.  <p><img src=\"/database/db/99/99-S3-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1999 Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/99/99-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/99/99-S3.tex\"></a></p> "
},
{
 "tags": ["Circular motion"],
 "question_id":99311,
 "title": "99-S3-Q11",
 "body": "Moment of inertia, circular hoop, contact, table.  <p><img src=\"/database/db/99/99-S3-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1999 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/99/99-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/99/99-S3.tex\"></a></p> "
},
{
 "tags": ["Discrete random variable"],
 "question_id":99312,
 "title": "99-S3-Q12",
 "body": "Increasing function, solution of equation, expectation.  <p><img src=\"/database/db/99/99-S3-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1999 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/99/99-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/99/99-S3.tex\"></a></p> "
},
{
 "tags": ["Continuous random variable"],
 "question_id":99313,
 "title": "99-S3-Q13",
 "body": "Cake in canteen, expectation.  <p><img src=\"/database/db/99/99-S3-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1999 Question 13 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/99/99-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/99/99-S3.tex\"></a></p> "
},
{
 "tags": ["Poisson distribution"],
 "question_id":99314,
 "title": "99-S3-Q14",
 "body": "Horizons, expected winnings.  <p><img src=\"/database/db/99/99-S3-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 1999 Question 14 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/99/99-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/99/99-S3.tex\"></a></p> "
},
{
 "tags": ["Logarithms"],
 "question_id":2000101,
 "title": "00-S1-Q1",
 "body": "Inequality, number, digit, C1-ish.  <p><img src=\"/database/db/00/00-S1-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2000 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/00/00-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/00/00-S1.tex\"></a></p> "
},
{
 "tags": ["Binomial coefficient"],
 "question_id":2000102,
 "title": "00-S1-Q2",
 "body": "Binomial expansion  <p><img src=\"/database/db/00/00-S1-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2000 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/00/00-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/00/00-S1.tex\"></a></p> "
},
{
 "tags": ["Integration"],
 "question_id":2000103,
 "title": "00-S1-Q3",
 "body": "Integer part, floor function, exponential and logarithm, curve sketching.  <p><img src=\"/database/db/00/00-S1-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2000 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/00/00-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/00/00-S1.tex\"></a></p> "
},
{
 "tags": ["Integration"],
 "question_id":2000104,
 "title": "00-S1-Q4",
 "body": "Inequality, maximum, quotient rule, differentiation, C1.  <p><img src=\"/database/db/00/00-S1-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2000 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/00/00-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/00/00-S1.tex\"></a></p> "
},
{
 "tags": ["Euclidean geometry"],
 "question_id":2000105,
 "title": "00-S1-Q5",
 "body": "Trigonometry, steepest line, inclined plane, C1.  <p><img src=\"/database/db/00/00-S1-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2000 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/00/00-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/00/00-S1.tex\"></a></p> "
},
{
 "tags": ["Curve sketching"],
 "question_id":2000106,
 "title": "00-S1-Q6",
 "body": "Factorisation, inequality, coordinate geometry, circles and lines, C1.  <p><img src=\"/database/db/00/00-S1-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2000 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/00/00-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/00/00-S1.tex\"></a></p> "
},
{
 "tags": ["Differentiation"],
 "question_id":2000107,
 "title": "00-S1-Q7",
 "body": "Quotient rule, derivative, C1.  <p><img src=\"/database/db/00/00-S1-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2000 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/00/00-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/00/00-S1.tex\"></a></p> "
},
{
 "tags": ["Integral"],
 "question_id":2000108,
 "title": "00-S1-Q8",
 "body": "Modulus function, absolute value, trigonometric function, curve sketching.  <p><img src=\"/database/db/00/00-S1-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2000 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/00/00-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/00/00-S1.tex\"></a></p> "
},
{
 "tags": ["Projectile motion"],
 "question_id":2000109,
 "title": "00-S1-Q9",
 "body": "Toy cannon in railway carriage, maximum range.  <p><img src=\"/database/db/00/00-S1-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2000 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/00/00-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/00/00-S1.tex\"></a></p> "
},
{
 "tags": ["Collision"],
 "question_id":2000110,
 "title": "00-S1-Q10",
 "body": "Energy of system, coefficients of restitution.  <p><img src=\"/database/db/00/00-S1-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2000 Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/00/00-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/00/00-S1.tex\"></a></p> "
},
{
 "tags": ["Friction"],
 "question_id":2000111,
 "title": "00-S1-Q11",
 "body": "Rod inclined against wall, ladder, coefficient of friction, limiting.  <p><img src=\"/database/db/00/00-S1-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2000 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/00/00-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/00/00-S1.tex\"></a></p> "
},
{
 "tags": ["Sampling with/out replacement"],
 "question_id":2000112,
 "title": "00-S1-Q12",
 "body": "Key, front door, elementary probability, combinatorics, C1.  <p><img src=\"/database/db/00/00-S1-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2000 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/00/00-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/00/00-S1.tex\"></a></p> "
},
{
 "tags": ["Tree diagram"],
 "question_id":2000113,
 "title": "00-S1-Q13",
 "body": "Gene, elementary probability, C1. <p><img src=\"/database/db/00/00-S1-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2000 Question 13 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/00/00-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/00/00-S1.tex\"></a></p> "
},
{
 "tags": ["Continuous random variable"],
 "question_id":2000114,
 "title": "00-S1-Q14",
 "body": "Uniform distribution, expectation, moments, variance.  <p><img src=\"/database/db/00/00-S1-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2000 Question 14 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/00/00-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/00/00-S1.tex\"></a></p> "
},
{
 "tags": ["Unit fraction"],
 "question_id":2000201,
 "title": "00-S2-Q1",
 "body": "Egyption fractions, prime, factors, number theory, C1.  <p><img src=\"/database/db/00/00-S2-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2000 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/00/00-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/00/00-S2.tex\"></a></p> "
},
{
 "tags": ["Factors of polynomials"],
 "question_id":2000202,
 "title": "00-S2-Q2",
 "body": "Proof, factorisation, C1.  <p><img src=\"/database/db/00/00-S2-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2000 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/00/00-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/00/00-S2.tex\"></a></p> "
},
{
 "tags": ["Approximation"],
 "question_id":2000203,
 "title": "00-S2-Q3",
 "body": "Error estimation, perturbation, range, inequality, length of triangle, C1.  <p><img src=\"/database/db/00/00-S2-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2000 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/00/00-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/00/00-S2.tex\"></a></p> "
},
{
 "tags": ["Complex numbers"],
 "question_id":2000204,
 "title": "00-S2-Q4",
 "body": "de Moivre's theorem, trigonometric identities, arctan, induction.  <p><img src=\"/database/db/00/00-S2-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2000 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/00/00-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/00/00-S2.tex\"></a></p> "
},
{
 "tags": ["Integration"],
 "question_id":2000205,
 "title": "00-S2-Q5",
 "body": "Approximation by linear functions, residual error, trigonometric functions, small angle approximation.  <p><img src=\"/database/db/00/00-S2-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2000 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/00/00-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/00/00-S2.tex\"></a></p> "
},
{
 "tags": ["Integral"],
 "question_id":2000206,
 "title": "00-S2-Q6",
 "body": "t-substitution, tan half angle substitution, trigonometry.  <p><img src=\"/database/db/00/00-S2-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2000 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/00/00-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/00/00-S2.tex\"></a></p> "
},
{
 "tags": ["Vector geometry"],
 "question_id":2000207,
 "title": "00-S2-Q7",
 "body": "Equation of a line and plane, interection, circle, line through origin.  <p><img src=\"/database/db/00/00-S2-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2000 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/00/00-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/00/00-S2.tex\"></a></p> "
},
{
 "tags": ["Differential equation"],
 "question_id":2000208,
 "title": "00-S2-Q8",
 "body": "Separable, integration, limit, small angle approximation.  <p><img src=\"/database/db/00/00-S2-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2000 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/00/00-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/00/00-S2.tex\"></a></p> "
},
{
 "tags": ["Free-fall"],
 "question_id":2000209,
 "title": "00-S2-Q9",
 "body": "Acceleration, equilibrium, air resistance, differential equation, parachute.  <p><img src=\"/database/db/00/00-S2-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2000 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/00/00-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/00/00-S2.tex\"></a></p> "
},
{
 "tags": ["Pulley"],
 "question_id":2000210,
 "title": "00-S2-Q10",
 "body": "Equilibrium, acceleration.  <p><img src=\"/database/db/00/00-S2-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2000 Question 10 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/00/00-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/00/00-S2.tex\"></a></p> "
},
{
 "tags": ["Hooke's law"],
 "question_id":2000211,
 "title": "00-S2-Q11",
 "body": "Modulus of elasticity, ceiling, simple harmonic motion, SHM.  <p><img src=\"/database/db/00/00-S2-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2000 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/00/00-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/00/00-S2.tex\"></a></p> "
},
{
 "tags": ["Normal distribution"],
 "question_id":2000212,
 "title": "00-S2-Q12",
 "body": "Henry the commuter, Cambridge to King's Cross, Liverpool street, train, inequality, expectation.  <p><img src=\"/database/db/00/00-S2-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2000 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/00/00-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/00/00-S2.tex\"></a></p> "
},
{
 "tags": ["Microtus agrestis"],
 "question_id":2000213,
 "title": "00-S2-Q13",
 "body": "Biologists, voles, combinatorics, binomial coefficients, sampling with/out replacement, C1.  <p><img src=\"/database/db/00/00-S2-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2000 Question 13 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/00/00-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/00/00-S2.tex\"></a></p> "
},
{
 "tags": ["Uniform distribution"],
 "question_id":2000214,
 "title": "00-S2-Q14",
 "body": "Independent, medium, probability density function, pdf, expectation and variance, inequality, normal distribution, central limit theorem.  <p><img src=\"/database/db/00/00-S2-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2000 Question 14 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/00/00-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/00/00-S2.tex\"></a></p> "
},
{
 "tags": ["Curve sketching"],
 "question_id":2000301,
 "title": "00-S3-Q1",
 "body": "Reciprocal and hyperbola functions, tangent, square, coordinate geometry, C1.  <p><img src=\"/database/db/00/00-S3-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2000 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/00/00-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/00/00-S3.tex\"></a></p> "
},
{
 "tags": ["Integration by substitution"],
 "question_id":2000302,
 "title": "00-S3-Q2",
 "body": "Substitution by trigonometric functions.  <p><img src=\"/database/db/00/00-S3-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2000 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/00/00-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/00/00-S3.tex\"></a></p> "
},
{
 "tags": ["Complex numbers"],
 "question_id":2000303,
 "title": "00-S3-Q3",
 "body": "Roots of unity, Argand diagram, equilateral triangle, geometry.  <p><img src=\"/database/db/00/00-S3-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2000 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/00/00-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/00/00-S3.tex\"></a></p> "
},
{
 "tags": ["Curve sketching"],
 "question_id":2000304,
 "title": "00-S3-Q4",
 "body": "Rational function, algebraic, intersection, oblique asymptote, C1-ish.  <p><img src=\"/database/db/00/00-S3-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2000 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/00/00-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/00/00-S3.tex\"></a></p> "
},
{
 "tags": ["2d Vector product"],
 "question_id":2000305,
 "title": "00-S3-Q5",
 "body": "Matrix, vector cyclic triple product, transformation.  <p><img src=\"/database/db/00/00-S3-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2000 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/00/00-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/00/00-S3.tex\"></a></p> "
},
{
 "tags": ["Polynomials"],
 "question_id":2000306,
 "title": "00-S3-Q6",
 "body": "Roots of cubic equation, factorisation, quartic equations, C1-ish.  <p><img src=\"/database/db/00/00-S3-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2000 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/00/00-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/00/00-S3.tex\"></a></p> "
},
{
 "tags": ["Analysis"],
 "question_id":2000307,
 "title": "00-S3-Q7",
 "body": "AM-GM inequality, e, binomial theorem, limit, product, exponential function, C1-ish.  <p><img src=\"/database/db/00/00-S3-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2000 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/00/00-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/00/00-S3.tex\"></a></p> "
},
{
 "tags": ["Proof by induction"],
 "question_id":2000308,
 "title": "00-S3-Q8",
 "body": "Recurrence relation, difference equation.  <p><img src=\"/database/db/00/00-S3-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2000 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/00/00-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/00/00-S3.tex\"></a></p> "
},
{
 "tags": ["Collision"],
 "question_id":2000309,
 "title": "00-S3-Q9",
 "body": "Disc, kineic energy, cosine of angle, inequality.  <p><img src=\"/database/db/00/00-S3-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2000 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/00/00-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/00/00-S3.tex\"></a></p> "
},
{
 "tags": ["Friction"],
 "question_id":2000310,
 "title": "00-S3-Q10",
 "body": "Coefficient of friction, sphere, slipping.  <p><img src=\"/database/db/00/00-S3-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2000 Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/00/00-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/00/00-S3.tex\"></a></p> "
},
{
 "tags": ["Friction"],
 "question_id":2000311,
 "title": "00-S3-Q11",
 "body": "Beam, limiting friction, slipping.  <p><img src=\"/database/db/00/00-S3-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2000 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/00/00-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/00/00-S3.tex\"></a></p> "
},
{
 "tags": ["Lottery"],
 "question_id":2000312,
 "title": "00-S3-Q12",
 "body": "Combinatorics, binomial approximation, exponential function, expectation, C1-ish.  <p><img src=\"/database/db/00/00-S3-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2000 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/00/00-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/00/00-S3.tex\"></a></p> "
},
{
 "tags": ["Pgf"],
 "question_id":2000313,
 "title": "00-S3-Q13",
 "body": "Probability generating function, dice, six, expectation.  <p><img src=\"/database/db/00/00-S3-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2000 Question 13 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/00/00-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/00/00-S3.tex\"></a></p> "
},
{
 "tags": ["Joint distribution"],
 "question_id":2000314,
 "title": "00-S3-Q14",
 "body": "Independence, expectation algebra.  <p><img src=\"/database/db/00/00-S3-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2000 Question 14 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/00/00-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/00/00-S3.tex\"></a></p> "
},
{
 "tags": ["Euclidean geometry"],
 "question_id":2001101,
 "title": "01-S1-Q1",
 "body": "Triangle, length, C1.  <p><img src=\"/database/db/01/01-S1-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2001 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/01/01-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/01/01-S1.tex\"></a></p> "
},
{
 "tags": ["Inequality"],
 "question_id":2001102,
 "title": "01-S1-Q2",
 "body": "Square root, quadratic function, C1  <p><img src=\"/database/db/01/01-S1-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2001 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/01/01-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/01/01-S1.tex\"></a></p> "
},
{
 "tags": ["Polynomials"],
 "question_id":2001103,
 "title": "01-S1-Q3",
 "body": "Differentiation, stationary points, factors, inequality, cubic, quadratic, sufficient and necessary conditions, C1.  <p><img src=\"/database/db/01/01-S1-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2001 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/01/01-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/01/01-S1.tex\"></a></p> "
},
{
 "tags": ["Trigonometry"],
 "question_id":2001104,
 "title": "01-S1-Q4",
 "body": "Solution of equations.  <p><img src=\"/database/db/01/01-S1-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2001 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/01/01-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/01/01-S1.tex\"></a></p> "
},
{
 "tags": ["Integral"],
 "question_id":2001105,
 "title": "01-S1-Q5",
 "body": "Derivatives.  <p><img src=\"/database/db/01/01-S1-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2001 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/01/01-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/01/01-S1.tex\"></a></p> "
},
{
 "tags": ["Area/Volume of revolution"],
 "question_id":2001106,
 "title": "01-S1-Q6",
 "body": "Spherical loaf of bread, slices, integration.  <p><img src=\"/database/db/01/01-S1-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2001 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/01/01-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/01/01-S1.tex\"></a></p> "
},
{
 "tags": ["Hubble's constant"],
 "question_id":2001107,
 "title": "01-S1-Q7",
 "body": "Cosmology, curve sketching, inequality, C1.  <p><img src=\"/database/db/01/01-S1-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2001 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/01/01-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/01/01-S1.tex\"></a></p> "
},
{
 "tags": ["Differential equations"],
 "question_id":2001108,
 "title": "01-S1-Q8",
 "body": "Substitution, trigonometry, second order equation.  <p><img src=\"/database/db/01/01-S1-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2001 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/01/01-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/01/01-S1.tex\"></a></p> "
},
{
 "tags": ["Time-distance"],
 "question_id":2002010,
 "title": "01-S1-Q9",
 "body": "Ship, tugboat, C1.  <p><img src=\"/database/db/01/01-S1-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2001 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/01/01-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/01/01-S1.tex\"></a></p> "
},
{
 "tags": ["Projectile motion"],
 "question_id":2001110,
 "title": "01-S1-Q10",
 "body": "Gun shell, equation of motion.  <p><img src=\"/database/db/01/01-S1-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2001 Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/01/01-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/01/01-S1.tex\"></a></p> "
},
{
 "tags": ["Hooke's law"],
 "question_id":2001111,
 "title": "01-S1-Q11",
 "body": "Cylinder, circular motion, modulus of elasticity.  <p><img src=\"/database/db/01/01-S1-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2001 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/01/01-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/01/01-S1.tex\"></a></p> "
},
{
 "tags": ["Tree diagram"],
 "question_id":2001112,
 "title": "01-S1-Q12",
 "body": "Gossip, rumour, C1.  <p><img src=\"/database/db/01/01-S1-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2001 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/01/01-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/01/01-S1.tex\"></a></p> "
},
{
 "tags": ["Poisson distribution"],
 "question_id":2001113,
 "title": "01-S1-Q13",
 "body": "Breaking plates. <p><img src=\"/database/db/01/01-S1-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2001 Question 13 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/01/01-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/01/01-S1.tex\"></a></p> "
},
{
 "tags": ["Combintorics"],
 "question_id":2001114,
 "title": "01-S1-Q14",
 "body": "Interview, candidates, elementary probability.  <p><img src=\"/database/db/01/01-S1-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2001 Question 14 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/01/01-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/01/01-S1.tex\"></a></p> "
},
{
 "tags": ["Binomial approximation"],
 "question_id":2001201,
 "title": "01-S2-Q1",
 "body": "Approximation to square roots, error, C1-ish.  <p><img src=\"/database/db/01/01-S2-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2001 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/01/01-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/01/01-S2.tex\"></a></p> "
},
{
 "tags": ["Curve sketching"],
 "question_id":2001202,
 "title": "01-S2-Q2",
 "body": "Integer part, floor function, sum, limit, C1-ish.  <p><img src=\"/database/db/01/01-S2-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2001 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/01/01-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/01/01-S2.tex\"></a></p> "
},
{
 "tags": ["Euclidean geometry"],
 "question_id":2001203,
 "title": "01-S2-Q3",
 "body": "Cuboid, ratio of volume to surface area, inequality, C1.  <p><img src=\"/database/db/01/01-S2-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2001 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/01/01-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/01/01-S2.tex\"></a></p> "
},
{
 "tags": ["Trigonometry"],
 "question_id":2001204,
 "title": "01-S2-Q4",
 "body": "Roots of equation, identity.  <p><img src=\"/database/db/01/01-S2-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2001 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/01/01-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/01/01-S2.tex\"></a></p> "
},
{
 "tags": ["Differential equation"],
 "question_id":2001205,
 "title": "01-S2-Q5",
 "body": "Curve sketching, maximum and minimum, stationary point, C1.  <p><img src=\"/database/db/01/01-S2-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2001 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/01/01-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/01/01-S2.tex\"></a></p> "
},
{
 "tags": ["Integral"],
 "question_id":2001206,
 "title": "01-S2-Q6",
 "body": "Arctan, integration by substitution.  <p><img src=\"/database/db/01/01-S2-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2001 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/01/01-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/01/01-S2.tex\"></a></p> "
},
{
 "tags": ["Complex number"],
 "question_id":2001207,
 "title": "01-S2-Q7",
 "body": "Argand diagram, 12-gon, rotation.  <p><img src=\"/database/db/01/01-S2-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2001 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/01/01-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/01/01-S2.tex\"></a></p> "
},
{
 "tags": ["Differential equation"],
 "question_id":2001208,
 "title": "01-S2-Q8",
 "body": "Functional equation, integer, limit.  <p><img src=\"/database/db/01/01-S2-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2001 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/01/01-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/01/01-S2.tex\"></a></p> "
},
{
 "tags": ["Air resistance"],
 "question_id":2001209,
 "title": "01-S2-Q9",
 "body": "Upward projection, energy, gravity.  <p><img src=\"/database/db/01/01-S2-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2001 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/01/01-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/01/01-S2.tex\"></a></p> "
},
{
 "tags": ["Collision"],
 "question_id":2001210,
 "title": "01-S2-Q10",
 "body": "Coefficient of restitution, kinetic energy, rebound.  <p><img src=\"/database/db/01/01-S2-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2001 Question 10 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/01/01-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/01/01-S2.tex\"></a></p> "
},
{
 "tags": ["Projectile motion"],
 "question_id":2001211,
 "title": "01-S2-Q11",
 "body": "Two-stage missile, fragments at highest point, range, inequality.  <p><img src=\"/database/db/01/01-S2-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2001 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/01/01-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/01/01-S2.tex\"></a></p> "
},
{
 "tags": ["Lottery"],
 "question_id":2001212,
 "title": "01-S2-Q12",
 "body": "Ruritania, integer, combinatorics, expectation, C1.  <p><img src=\"/database/db/01/01-S2-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2001 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/01/01-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/01/01-S2.tex\"></a></p> "
},
{
 "tags": ["Pdf"],
 "question_id":2001213,
 "title": "01-S2-Q13",
 "body": "Probability density function, median, light bulbs, independent, identically distributed, iid, fail.  <p><img src=\"/database/db/01/01-S2-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2001 Question 13 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/01/01-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/01/01-S2.tex\"></a></p> "
},
{
 "tags": ["Coin toss"],
 "question_id":2001214,
 "title": "01-S2-Q14",
 "body": "Random variable, expectation, minimum, variance, cumulative distribution function, cdf, mean.  <p><img src=\"/database/db/01/01-S2-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2001 Question 14 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/01/01-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/01/01-S2.tex\"></a></p> "
},
{
 "tags": ["Maclaurin series"],
 "question_id":2001301,
 "title": "01-S3-Q1",
 "body": "Taylor series, differentiation, induction, differential equation.  <p><img src=\"/database/db/01/01-S3-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2001 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/01/01-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/01/01-S3.tex\"></a></p> "
},
{
 "tags": ["Area by integration"],
 "question_id":2001302,
 "title": "01-S3-Q2",
 "body": "Hyperbolic function, area, inequality.  <p><img src=\"/database/db/01/01-S3-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2001 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/01/01-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/01/01-S3.tex\"></a></p> "
},
{
 "tags": ["Quadratic equations"],
 "question_id":2001303,
 "title": "01-S3-Q3",
 "body": "Regions, inequality, roots.  <p><img src=\"/database/db/01/01-S3-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2001 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/01/01-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/01/01-S3.tex\"></a></p> "
},
{
 "tags": ["Functions"],
 "question_id":2001304,
 "title": "01-S3-Q4",
 "body": "Range, curve sketching, trigonometric, rational functions, arctan, sine.  <p><img src=\"/database/db/01/01-S3-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2001 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/01/01-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/01/01-S3.tex\"></a></p> "
},
{
 "tags": ["Parabola"],
 "question_id":2001305,
 "title": "01-S3-Q5",
 "body": "Cubic equation, normal and tangents, cartesian equation, locus, curve sketching.  <p><img src=\"/database/db/01/01-S3-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2001 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/01/01-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/01/01-S3.tex\"></a></p> "
},
{
 "tags": ["Coordinate geometry"],
 "question_id":2001306,
 "title": "01-S3-Q6",
 "body": "Ellipsoid, plane, orthocentre, circumcentre, triangle, centroid, triangle, line segment, ratio.  <p><img src=\"/database/db/01/01-S3-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2001 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/01/01-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/01/01-S3.tex\"></a></p> "
},
{
 "tags": ["Differential equation"],
 "question_id":2001307,
 "title": "01-S3-Q7",
 "body": "Curve sketching, logarithm function, separable equation, parabola, orthogonal intersection.  <p><img src=\"/database/db/01/01-S3-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2001 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/01/01-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/01/01-S3.tex\"></a></p> "
},
{
 "tags": ["Complex numbers"],
 "question_id":2001308,
 "title": "01-S3-Q8",
 "body": "Equations of locus, arcs, circles, lines arguments, sketching.  <p><img src=\"/database/db/01/01-S3-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2001 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/01/01-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/01/01-S3.tex\"></a></p> "
},
{
 "tags": ["Friction"],
 "question_id":2001309,
 "title": "01-S3-Q9",
 "body": "Horizontal beams, coefficient of friction, slip, limiting equilibrium, centre of gravity.  <p><img src=\"/database/db/01/01-S3-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2001 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/01/01-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/01/01-S3.tex\"></a></p> "
},
{
 "tags": ["Vector velocity"],
 "question_id":2001310,
 "title": "01-S3-Q10",
 "body": "Ships, velocities, magnitude, dot scalar product.  <p><img src=\"/database/db/01/01-S3-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2001 Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/01/01-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/01/01-S3.tex\"></a></p> "
},
{
 "tags": ["Moment of inertia"],
 "question_id":2001311,
 "title": "01-S3-Q11",
 "body": "Angular velocity, cylinder, rotation.  <p><img src=\"/database/db/01/01-S3-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2001 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/01/01-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/01/01-S3.tex\"></a></p> "
},
{
 "tags": ["Sampling with/out replacement"],
 "question_id":2001312,
 "title": "01-S3-Q12",
 "body": "A bag of balls, combinatorics, C1.  <p><img src=\"/database/db/01/01-S3-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2001 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/01/01-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/01/01-S3.tex\"></a></p> "
},
{
 "tags": ["Coin toss"],
 "question_id":2001313,
 "title": "01-S3-Q13",
 "body": "Elementary probability, conditional probability, C1-ish.  <p><img src=\"/database/db/01/01-S3-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2001 Question 13 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/01/01-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/01/01-S3.tex\"></a></p> "
},
{
 "tags": ["Continuous random variable"],
 "question_id":2001314,
 "title": "01-S3-Q14",
 "body": "Uniform distribution, variance, estimators.  <p><img src=\"/database/db/01/01-S3-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2001 Question 14 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/01/01-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/01/01-S3.tex\"></a></p> "
},
{
 "tags": ["Simultaneous equations"],
 "question_id":2002101,
 "title": "02-S1-Q1",
 "body": "Ellipse, circle, intersection, C1.  <p><img src=\"/database/db/02/02-S1-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2002 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/02/02-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/02/02-S1.tex\"></a></p> "
},
{
 "tags": ["Curve sketching"],
 "question_id":2002102,
 "title": "02-S1-Q2",
 "body": "Differentiation, stationary point, maximum, minimum, C1  <p><img src=\"/database/db/02/02-S1-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2002 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/02/02-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/02/02-S1.tex\"></a></p> "
},
{
 "tags": ["Inequalities"],
 "question_id":2002103,
 "title": "02-S1-Q3",
 "body": "Differentiation, trigonometric functions, maximum and minimum, C1.  <p><img src=\"/database/db/02/02-S1-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2002 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/02/02-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/02/02-S1.tex\"></a></p> "
},
{
 "tags": ["Curve sketching"],
 "question_id":2002104,
 "title": "02-S1-Q4",
 "body": "Intersection with line, area under curve, integration, volume of revolution.  <p><img src=\"/database/db/02/02-S1-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2002 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/02/02-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/02/02-S1.tex\"></a></p> "
},
{
 "tags": ["Roots of polynomials"],
 "question_id":2002105,
 "title": "02-S1-Q5",
 "body": "Factorisation, product, quartic equations, integer, C1.  <p><img src=\"/database/db/02/02-S1-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2002 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/02/02-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/02/02-S1.tex\"></a></p> "
},
{
 "tags": ["Euclidean geometry"],
 "question_id":2002106,
 "title": "02-S1-Q6",
 "body": "Pyramid, equilateral triangle, volume, C1.  <p><img src=\"/database/db/02/02-S1-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2002 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/02/02-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/02/02-S1.tex\"></a></p> "
},
{
 "tags": ["Integral"],
 "question_id":2002107,
 "title": "02-S1-Q7",
 "body": "Trickery, trigonometric functions.  <p><img src=\"/database/db/02/02-S1-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2002 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/02/02-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/02/02-S1.tex\"></a></p> "
},
{
 "tags": ["Geometric series"],
 "question_id":2002108,
 "title": "02-S1-Q8",
 "body": "Sequences, interest, financial maths, C1-ish.  <p><img src=\"/database/db/02/02-S1-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2002 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/02/02-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/02/02-S1.tex\"></a></p> "
},
{
 "tags": ["Friction"],
 "question_id":2002109,
 "title": "02-S1-Q9",
 "body": "Lorry on inclined plane, centre of gravity, inequality.  <p><img src=\"/database/db/02/02-S1-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2002 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/02/02-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/02/02-S1.tex\"></a></p> "
},
{
 "tags": ["Collision"],
 "question_id":2002110,
 "title": "02-S1-Q10",
 "body": "Bicycle pump, speed.  <p><img src=\"/database/db/02/02-S1-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2002 Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/02/02-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/02/02-S1.tex\"></a></p> "
},
{
 "tags": ["Collision"],
 "question_id":2002111,
 "title": "02-S1-Q11",
 "body": "Particles, sin, angle, conservation of energy.  <p><img src=\"/database/db/02/02-S1-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2002 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/02/02-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/02/02-S1.tex\"></a></p> "
},
{
 "tags": ["Harry the Calculating Horse"],
 "question_id":2002112,
 "title": "02-S1-Q12",
 "body": "Elementary probability, expectation, C1.  <p><img src=\"/database/db/02/02-S1-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2002 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/02/02-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/02/02-S1.tex\"></a></p> "
},
{
 "tags": ["Discrete random variable"],
 "question_id":2002113,
 "title": "02-S1-Q13",
 "body": "Roots of quadratic, expectation, cubic equation. <p><img src=\"/database/db/02/02-S1-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2002 Question 13 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/02/02-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/02/02-S1.tex\"></a></p> "
},
{
 "tags": ["Poisson distribution"],
 "question_id":2002114,
 "title": "02-S1-Q14",
 "body": "Cash dispenser, police.  <p><img src=\"/database/db/02/02-S1-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2002 Question 14 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/02/02-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/02/02-S1.tex\"></a></p> "
},
{
 "tags": ["Integral"],
 "question_id":2002201,
 "title": "02-S2-Q1",
 "body": "Integration by substitution, sine, trigonometry.  <p><img src=\"/database/db/02/02-S2-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2002 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/02/02-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/02/02-S2.tex\"></a></p> "
},
{
 "tags": ["Polynomial equation"],
 "question_id":2002202,
 "title": "02-S2-Q2",
 "body": "Substitution, quartic, quadratic equations, algebra, C1.  <p><img src=\"/database/db/02/02-S2-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2002 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/02/02-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/02/02-S2.tex\"></a></p> "
},
{
 "tags": ["Fermat number"],
 "question_id":2002203,
 "title": "02-S2-Q3",
 "body": "Number theory, prime, induction, C1.  <p><img src=\"/database/db/02/02-S2-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2002 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/02/02-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/02/02-S2.tex\"></a></p> "
},
{
 "tags": ["Trigonometry"],
 "question_id":2002204,
 "title": "02-S2-Q4",
 "body": "Quadratic equation, sine, inequality, determinant, logarithmic function.  <p><img src=\"/database/db/02/02-S2-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2002 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/02/02-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/02/02-S2.tex\"></a></p> "
},
{
 "tags": ["Logistic map"],
 "question_id":2002205,
 "title": "02-S2-Q5",
 "body": "Recurrence relation, difference equation, quartic equation, C1.  <p><img src=\"/database/db/02/02-S2-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2002 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/02/02-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/02/02-S2.tex\"></a></p> "
},
{
 "tags": ["Euclidean geometry"],
 "question_id":2002206,
 "title": "02-S2-Q6",
 "body": "Inclined plane, rotate, angle.  <p><img src=\"/database/db/02/02-S2-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2002 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/02/02-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/02/02-S2.tex\"></a></p> "
},
{
 "tags": ["3-D geometry"],
 "question_id":2002207,
 "title": "02-S2-Q7",
 "body": "3-dimensional, vector geometry, lines, distance, perpendicular.  <p><img src=\"/database/db/02/02-S2-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2002 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/02/02-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/02/02-S2.tex\"></a></p> "
},
{
 "tags": ["Differential equation"],
 "question_id":2002208,
 "title": "02-S2-Q8",
 "body": "Continuity, modulus function, limit.  <p><img src=\"/database/db/02/02-S2-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2002 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/02/02-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/02/02-S2.tex\"></a></p> "
},
{
 "tags": ["Projectile motion"],
 "question_id":2002209,
 "title": "02-S2-Q9",
 "body": "Range, equation of motion, small perturbation, small angle approximation, trigonometry, inequality.  <p><img src=\"/database/db/02/02-S2-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2002 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/02/02-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/02/02-S2.tex\"></a></p> "
},
{
 "tags": ["Time-distance"],
 "question_id":2002210,
 "title": "02-S2-Q10",
 "body": "Marathon, C1.  <p><img src=\"/database/db/02/02-S2-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2002 Question 10 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/02/02-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/02/02-S2.tex\"></a></p> "
},
{
 "tags": ["Friction"],
 "question_id":2002211,
 "title": "02-S2-Q11",
 "body": "Beam, centre of mass, ladder, limiting equilibrium.  <p><img src=\"/database/db/02/02-S2-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2002 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/02/02-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/02/02-S2.tex\"></a></p> "
},
{
 "tags": ["Coin toss"],
 "question_id":2002212,
 "title": "02-S2-Q12",
 "body": "Binomial expansion, normal approximation.  <p><img src=\"/database/db/02/02-S2-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2002 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/02/02-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/02/02-S2.tex\"></a></p> "
},
{
 "tags": ["Cdf"],
 "question_id":2002213,
 "title": "02-S2-Q13",
 "body": "Cumulative distribution function, inequality, expectation and variance.  <p><img src=\"/database/db/02/02-S2-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2002 Question 13 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/02/02-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/02/02-S2.tex\"></a></p> "
},
{
 "tags": ["Geometric probability"],
 "question_id":2002214,
 "title": "02-S2-Q14",
 "body": "Circular island, concentric regions.  <p><img src=\"/database/db/02/02-S2-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2002 Question 14 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/02/02-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/02/02-S2.tex\"></a></p> "
},
{
 "tags": ["Volume of revolution"],
 "question_id":2002301,
 "title": "02-S3-Q1",
 "body": "Integration, limit, lograithm function.  <p><img src=\"/database/db/02/02-S3-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2002 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/02/02-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/02/02-S3.tex\"></a></p> "
},
{
 "tags": ["Trigonometry"],
 "question_id":2002302,
 "title": "02-S3-Q2",
 "body": "Sum, arctan, identity.  <p><img src=\"/database/db/02/02-S3-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2002 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/02/02-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/02/02-S3.tex\"></a></p> "
},
{
 "tags": ["Curve sketching"],
 "question_id":2002303,
 "title": "02-S3-Q3",
 "body": "Square root function, inequality, roots.  <p><img src=\"/database/db/02/02-S3-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2002 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/02/02-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/02/02-S3.tex\"></a></p> "
},
{
 "tags": ["Inequality"],
 "question_id":2002304,
 "title": "02-S3-Q4",
 "body": "Number theory, positive integer, difference of cubes, sum of square, C1.  <p><img src=\"/database/db/02/02-S3-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2002 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/02/02-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/02/02-S3.tex\"></a></p> "
},
{
 "tags": ["Quartic equation"],
 "question_id":2002305,
 "title": "02-S3-Q5",
 "body": "Quadratic equation, factorisation, C1.  <p><img src=\"/database/db/02/02-S3-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2002 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/02/02-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/02/02-S3.tex\"></a></p> "
},
{
 "tags": ["Differential equation"],
 "question_id":2002306,
 "title": "02-S3-Q6",
 "body": "Solution curve, curve sketching.  <p><img src=\"/database/db/02/02-S3-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2002 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/02/02-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/02/02-S3.tex\"></a></p> "
},
{
 "tags": ["Inequality"],
 "question_id":2002307,
 "title": "02-S3-Q7",
 "body": "Trigonometry, coordinate geometry, algebraic manipulation, C1-ish.  <p><img src=\"/database/db/02/02-S3-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2002 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/02/02-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/02/02-S3.tex\"></a></p> "
},
{
 "tags": ["Complex numbers"],
 "question_id":2002308,
 "title": "02-S3-Q8",
 "body": "Modulus and argument, modulus, identity.  <p><img src=\"/database/db/02/02-S3-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2002 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/02/02-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/02/02-S3.tex\"></a></p> "
},
{
 "tags": ["Inclined plane"],
 "question_id":2002309,
 "title": "02-S3-Q9",
 "body": "Equilibrium, fluid, topple, centre of mass.  <p><img src=\"/database/db/02/02-S3-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2002 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/02/02-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/02/02-S3.tex\"></a></p> "
},
{
 "tags": ["Friction"],
 "question_id":2002310,
 "title": "02-S3-Q10",
 "body": "Cylinder, trigonometry, second order differential equation, slip.  <p><img src=\"/database/db/02/02-S3-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2002 Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/02/02-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/02/02-S3.tex\"></a></p> "
},
{
 "tags": ["Collision"],
 "question_id":2002311,
 "title": "02-S3-Q11",
 "body": "Coefficient of restitution, triangular horizontal surface.  <p><img src=\"/database/db/02/02-S3-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2002 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/02/02-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/02/02-S3.tex\"></a></p> "
},
{
 "tags": ["Coin toss"],
 "question_id":2002312,
 "title": "02-S3-Q12",
 "body": "Expectation, C1.  <p><img src=\"/database/db/02/02-S3-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2002 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/02/02-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/02/02-S3.tex\"></a></p> "
},
{
 "tags": ["Continuous random variable"],
 "question_id":2002313,
 "title": "02-S3-Q13",
 "body": "Exponential distribution, bus route, median.  <p><img src=\"/database/db/02/02-S3-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2002 Question 13 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/02/02-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/02/02-S3.tex\"></a></p> "
},
{
 "tags": ["Discrete random variable"],
 "question_id":2002314,
 "title": "02-S3-Q14",
 "body": "Variance, covariance, binomial distribution, RSS.  <p><img src=\"/database/db/02/02-S3-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2002 Question 14 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/02/02-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/02/02-S3.tex\"></a></p> "
},
{
 "tags": ["Sum"],
 "question_id":2003101,
 "title": "03-S1-Q1",
 "body": "Simultaneous equations, sum of squares and cubes.  <p><img src=\"/database/db/03/03-S1-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2003 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/03/03-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/03/03-S1.tex\"></a></p> "
},
{
 "tags": ["Solution to equations"],
 "question_id":2003102,
 "title": "03-S1-Q2",
 "body": "Examination paper, candidate, reciprocal functions, if and only if, C1  <p><img src=\"/database/db/03/03-S1-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2003 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/03/03-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/03/03-S1.tex\"></a></p> "
},
{
 "tags": ["Trigonometry"],
 "question_id":2003103,
 "title": "03-S1-Q3",
 "body": "If and only if, general solution to trigonometric equations.  <p><img src=\"/database/db/03/03-S1-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2003 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/03/03-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/03/03-S1.tex\"></a></p> "
},
{
 "tags": ["Inequality"],
 "question_id":2003104,
 "title": "03-S1-Q4",
 "body": "Trigonometry. <p><img src=\"/database/db/03/03-S1-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2003 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/03/03-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/03/03-S1.tex\"></a></p> "
},
{
 "tags": ["Binomial expansion"],
 "question_id":2003105,
 "title": "03-S1-Q5",
 "body": "Binomial coefficient, algebraic manipulation.  <p><img src=\"/database/db/03/03-S1-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2003 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/03/03-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/03/03-S1.tex\"></a></p> "
},
{
 "tags": ["Integrals"],
 "question_id":2003106,
 "title": "03-S1-Q6",
 "body": "Integration by substitution.  <p><img src=\"/database/db/03/03-S1-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2003 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/03/03-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/03/03-S1.tex\"></a></p> "
},
{
 "tags": ["Number theory"],
 "question_id":2003107,
 "title": "03-S1-Q7",
 "body": "Inequality, divisibility, sum of digits, C1.  <p><img src=\"/database/db/03/03-S1-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2003 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/03/03-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/03/03-S1.tex\"></a></p> "
},
{
 "tags": ["Differential equations"],
 "question_id":2003108,
 "title": "03-S1-Q8",
 "body": "Chemicals, rate of change, first order equation.  <p><img src=\"/database/db/03/03-S1-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2003 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/03/03-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/03/03-S1.tex\"></a></p> "
},
{
 "tags": ["Projectile motion"],
 "question_id":2003109,
 "title": "03-S1-Q9",
 "body": "Angle of projection, range equation.  <p><img src=\"/database/db/03/03-S1-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2003 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/03/03-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/03/03-S1.tex\"></a></p> "
},
{
 "tags": ["Centre of gravity"],
 "question_id":2003110,
 "title": "03-S1-Q10",
 "body": "Rectangular lamina, triangle, trapezium, equilibrium.  <p><img src=\"/database/db/03/03-S1-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2003 Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/03/03-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/03/03-S1.tex\"></a></p> "
},
{
 "tags": ["Collision"],
 "question_id":2003111,
 "title": "03-S1-Q11",
 "body": "Inclined plane, coefficient of restitution, kinetic energy.  <p><img src=\"/database/db/03/03-S1-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2003 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/03/03-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/03/03-S1.tex\"></a></p> "
},
{
 "tags": ["Sampling with/out replacement"],
 "question_id":2003112,
 "title": "03-S1-Q12",
 "body": "Balls out of bag, expectation, sum of squares, C1-ish.  <p><img src=\"/database/db/03/03-S1-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2003 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/03/03-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/03/03-S1.tex\"></a></p> "
},
{
 "tags": ["Binomial distribution"],
 "question_id":2003113,
 "title": "03-S1-Q13",
 "body": "Football, penalty shootout, expectation, elementary probability. <p><img src=\"/database/db/03/03-S1-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2003 Question 13 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/03/03-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/03/03-S1.tex\"></a></p> "
},
{
 "tags": ["Poisson distribution"],
 "question_id":2003114,
 "title": "03-S1-Q14",
 "body": "Phone calls, average.  <p><img src=\"/database/db/03/03-S1-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2003 Question 14 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/03/03-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/03/03-S1.tex\"></a></p> "
},
{
 "tags": ["Simultaneous equations"],
 "question_id":2003201,
 "title": "03-S2-Q1",
 "body": "Linear system, solution, inequality, C1.  <p><img src=\"/database/db/03/03-S2-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2003 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/03/03-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/03/03-S2.tex\"></a></p> "
},
{
 "tags": ["Trigonometry"],
 "question_id":2003202,
 "title": "03-S2-Q2",
 "body": "Identity, inverse trigonometric functions.  <p><img src=\"/database/db/03/03-S2-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2003 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/03/03-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/03/03-S2.tex\"></a></p> "
},
{
 "tags": ["Irrational number"],
 "question_id":2003203,
 "title": "03-S2-Q3",
 "body": "Number theory, cube root, proof by induction, sequence, converge, C1-ish.  <p><img src=\"/database/db/03/03-S2-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2003 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/03/03-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/03/03-S2.tex\"></a></p> "
},
{
 "tags": ["Euclidean geometry"],
 "question_id":2003204,
 "title": "03-S2-Q4",
 "body": "Lines and circles, intersection, segment, C1.  <p><img src=\"/database/db/03/03-S2-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2003 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/03/03-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/03/03-S2.tex\"></a></p> "
},
{
 "tags": ["Vector geometry"],
 "question_id":2003205,
 "title": "03-S2-Q5",
 "body": "Position vector, intersection, midpoint.  <p><img src=\"/database/db/03/03-S2-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2003 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/03/03-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/03/03-S2.tex\"></a></p> "
},
{
 "tags": ["Integration"],
 "question_id":2003206,
 "title": "03-S2-Q6",
 "body": "Curve sketching, modulus function, composition of function, trigonometric function.  <p><img src=\"/database/db/03/03-S2-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2003 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/03/03-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/03/03-S2.tex\"></a></p> "
},
{
 "tags": ["Analysis"],
 "question_id":2003207,
 "title": "03-S2-Q7",
 "body": "Integration by parts, logarithmic function, limit, inequality, sum of inverse squares.  <p><img src=\"/database/db/03/03-S2-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2003 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/03/03-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/03/03-S2.tex\"></a></p> "
},
{
 "tags": ["Differential equations"],
 "question_id":2003208,
 "title": "03-S2-Q8",
 "body": "Stationary value, first order equation, curve sketching, limit.  <p><img src=\"/database/db/03/03-S2-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2003 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/03/03-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/03/03-S2.tex\"></a></p> "
},
{
 "tags": ["Friction"],
 "question_id":2003209,
 "title": "03-S2-Q9",
 "body": "Rod, cylinder, coefficient of friction, limiting equilibrium.  <p><img src=\"/database/db/03/03-S2-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2003 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/03/03-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/03/03-S2.tex\"></a></p> "
},
{
 "tags": ["Acceleration"],
 "question_id":2003210,
 "title": "03-S2-Q10",
 "body": "Equilibrium, triangle, reaction, normal force.  <p><img src=\"/database/db/03/03-S2-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2003 Question 10 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/03/03-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/03/03-S2.tex\"></a></p> "
},
{
 "tags": ["Projectile motion"],
 "question_id":2003211,
 "title": "03-S2-Q11",
 "body": "Angle of elevation, equation of range.  <p><img src=\"/database/db/03/03-S2-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2003 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/03/03-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/03/03-S2.tex\"></a></p> "
},
{
 "tags": ["Elementary particles"],
 "question_id":2003212,
 "title": "03-S2-Q12",
 "body": "Binomial distribution, conditional probability, expectation algebra, limit.  <p><img src=\"/database/db/03/03-S2-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2003 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/03/03-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/03/03-S2.tex\"></a></p> "
},
{
 "tags": ["Poisson distribution"],
 "question_id":2003213,
 "title": "03-S2-Q13",
 "body": "Normal approximatino, mean, inequality, discrete random variable.  <p><img src=\"/database/db/03/03-S2-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2003 Question 13 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/03/03-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/03/03-S2.tex\"></a></p> "
},
{
 "tags": ["Hypothesis testing"],
 "question_id":2003214,
 "title": "03-S2-Q14",
 "body": "Coin toss, biased die, statistical test, alternative hypothesis, curve sketching.  <p><img src=\"/database/db/03/03-S2-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2003 Question 14 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/03/03-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/03/03-S2.tex\"></a></p> "
},
{
 "tags": ["Integration"],
 "question_id":2003301,
 "title": "03-S3-Q1",
 "body": "Inverse differentiation, inverse trigonometric and hyperbolic functions.  <p><img src=\"/database/db/03/03-S3-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2003 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/03/03-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/03/03-S3.tex\"></a></p> "
},
{
 "tags": ["Binomial series"],
 "question_id":2003302,
 "title": "03-S3-Q2",
 "body": "Binomial coefficient, sum.  <p><img src=\"/database/db/03/03-S3-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2003 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/03/03-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/03/03-S3.tex\"></a></p> "
},
{
 "tags": ["Curve sketching"],
 "question_id":2003303,
 "title": "03-S3-Q3",
 "body": "Reciprocal function, differentiation, C1.  <p><img src=\"/database/db/03/03-S3-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2003 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/03/03-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/03/03-S3.tex\"></a></p> "
},
{
 "tags": ["Parametric equation"],
 "question_id":2003304,
 "title": "03-S3-Q4",
 "body": "Tangent, sequence of points meet the curve.  <p><img src=\"/database/db/03/03-S3-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2003 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/03/03-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/03/03-S3.tex\"></a></p> "
},
{
 "tags": ["Cubic equations"],
 "question_id":2003305,
 "title": "03-S3-Q5",
 "body": "Quadratic equations, curve sketching, necessary and sufficient conditions, turning points, C1-ish.  <p><img src=\"/database/db/03/03-S3-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2003 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/03/03-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/03/03-S3.tex\"></a></p> "
},
{
 "tags": ["Trigonometric series"],
 "question_id":2003306,
 "title": "03-S3-Q6",
 "body": "Solution to trigonometric equations, product to sum formula.  <p><img src=\"/database/db/03/03-S3-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2003 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/03/03-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/03/03-S3.tex\"></a></p> "
},
{
 "tags": ["Coordinate geometry"],
 "question_id":2003307,
 "title": "03-S3-Q7",
 "body": "Feet of the perpendicular, geometrical interpretation, collinear.  <p><img src=\"/database/db/03/03-S3-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2003 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/03/03-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/03/03-S3.tex\"></a></p> "
},
{
 "tags": ["Differential equation"],
 "question_id":2003308,
 "title": "03-S3-Q8",
 "body": "Implicit differentiation, general solution.  <p><img src=\"/database/db/03/03-S3-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2003 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/03/03-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/03/03-S3.tex\"></a></p> "
},
{
 "tags": ["SHM"],
 "question_id":2003309,
 "title": "03-S3-Q9",
 "body": "Simple harmonic motion, Hooke's law, modulus of elasticity, equilibrium, small displacement, perturbation.  <p><img src=\"/database/db/03/03-S3-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2003 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/03/03-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/03/03-S3.tex\"></a></p> "
},
{
 "tags": ["Acceleration"],
 "question_id":2003310,
 "title": "03-S3-Q10",
 "body": "Time-distance, limit, C1.  <p><img src=\"/database/db/03/03-S3-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2003 Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/03/03-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/03/03-S3.tex\"></a></p> "
},
{
 "tags": ["Projectile motion"],
 "question_id":2003311,
 "title": "03-S3-Q11",
 "body": "Direction of projection, inequality, velocity equation, distance.  <p><img src=\"/database/db/03/03-S3-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2003 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/03/03-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/03/03-S3.tex\"></a></p> "
},
{
 "tags": ["Poisson distribution"],
 "question_id":2003312,
 "title": "03-S3-Q12",
 "body": "Interruptions to work, expectation.  <p><img src=\"/database/db/03/03-S3-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2003 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/03/03-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/03/03-S3.tex\"></a></p> "
},
{
 "tags": ["Rabbit warren"],
 "question_id":2003313,
 "title": "03-S3-Q13",
 "body": "Elementary probability, conditional probability.  <p><img src=\"/database/db/03/03-S3-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2003 Question 13 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/03/03-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/03/03-S3.tex\"></a></p> "
},
{
 "tags": ["Dice roll"],
 "question_id":2003314,
 "title": "03-S3-Q14",
 "body": "Probability generating function, pgf.  <p><img src=\"/database/db/03/03-S3-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2003 Question 14 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/03/03-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/03/03-S3.tex\"></a></p> "
},
{
 "tags": ["Surds and polynomials"],
 "question_id":2004101,
 "title": "04-S1-Q1",
 "body": "Square roots, cube roots, solutions to polynomial equations, C1.  <p><img src=\"/database/db/04/04-S1-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2004 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/04/04-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/04/04-S1.tex\"></a></p> "
},
{
 "tags": ["Curve sketching"],
 "question_id":2004102,
 "title": "04-S1-Q2",
 "body": "Integration, integer part, floor function, square root, sum.  <p><img src=\"/database/db/04/04-S1-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2004 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/04/04-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/04/04-S1.tex\"></a></p> "
},
{
 "tags": ["Factors of polynomials"],
 "question_id":2004103,
 "title": "04-S1-Q3",
 "body": "Factorisation, linear factors, C1.  <p><img src=\"/database/db/04/04-S1-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2004 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/04/04-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/04/04-S1.tex\"></a></p> "
},
{
 "tags": ["Integration by substitution"],
 "question_id":2004104,
 "title": "04-S1-Q4",
 "body": "Differentiation, trigonometric substitution. <p><img src=\"/database/db/04/04-S1-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2004 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/04/04-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/04/04-S1.tex\"></a></p> "
},
{
 "tags": ["Number theory"],
 "question_id":2004105,
 "title": "04-S1-Q5",
 "body": "Arithmetic progression, square, solution, C1.  <p><img src=\"/database/db/04/04-S1-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2004 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/04/04-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/04/04-S1.tex\"></a></p> "
},
{
 "tags": ["Coordinate geometry"],
 "question_id":2004106,
 "title": "04-S1-Q6",
 "body": "Intersections, midpoint, line, right angle, C1.  <p><img src=\"/database/db/04/04-S1-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2004 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/04/04-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/04/04-S1.tex\"></a></p> "
},
{
 "tags": ["Recurrence relation"],
 "question_id":2004107,
 "title": "04-S1-Q7",
 "body": "Difference equations, algebraic fractions, C1.  <p><img src=\"/database/db/04/04-S1-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2004 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/04/04-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/04/04-S1.tex\"></a></p> "
},
{
 "tags": ["Recurrence relations"],
 "question_id":2004108,
 "title": "04-S1-Q8",
 "body": "Sequence, strictly increasing, inequality, proof, C1.  <p><img src=\"/database/db/04/04-S1-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2004 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/04/04-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/04/04-S1.tex\"></a></p> "
},
{
 "tags": ["Projectile motion"],
 "question_id":2004109,
 "title": "04-S1-Q9",
 "body": "Maximum height, inequality.  <p><img src=\"/database/db/04/04-S1-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2004 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/04/04-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/04/04-S1.tex\"></a></p> "
},
{
 "tags": ["Time-distance"],
 "question_id":2004110,
 "title": "04-S1-Q10",
 "body": "Acceleration, magnitude, inequality, C1.  <p><img src=\"/database/db/04/04-S1-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2004 Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/04/04-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/04/04-S1.tex\"></a></p> "
},
{
 "tags": ["Friction"],
 "question_id":2004111,
 "title": "04-S1-Q11",
 "body": "Two ladders, coefficient of friction, slip.  <p><img src=\"/database/db/04/04-S1-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2004 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/04/04-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/04/04-S1.tex\"></a></p> "
},
{
 "tags": ["Microships"],
 "question_id":2004112,
 "title": "04-S1-Q12",
 "body": "Large random sample, C1-ish.  <p><img src=\"/database/db/04/04-S1-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2004 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/04/04-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/04/04-S1.tex\"></a></p> "
},
{
 "tags": ["Hypothesis testing"],
 "question_id":2004113,
 "title": "04-S1-Q13",
 "body": "Continuous rectangular distribution, null and alternative hypothesis. <p><img src=\"/database/db/04/04-S1-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2004 Question 13 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/04/04-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/04/04-S1.tex\"></a></p> "
},
{
 "tags": ["Pirates"],
 "question_id":2004114,
 "title": "04-S1-Q14",
 "body": "Elementary probability, tree diagram, C1.  <p><img src=\"/database/db/04/04-S1-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2004 Question 14 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/04/04-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/04/04-S1.tex\"></a></p> "
},
{
 "tags": ["Surds"],
 "question_id":2004201,
 "title": "04-S2-Q1",
 "body": "Solution of equations, square root function, C1.  <p><img src=\"/database/db/04/04-S2-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2004 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/04/04-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/04/04-S2.tex\"></a></p> "
},
{
 "tags": ["Quadratic function"],
 "question_id":2004202,
 "title": "04-S2-Q2",
 "body": "Curve sketching, proof, modulus function, inequality, C1.  <p><img src=\"/database/db/04/04-S2-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2004 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/04/04-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/04/04-S2.tex\"></a></p> "
},
{
 "tags": ["Curve sketching"],
 "question_id":2004203,
 "title": "04-S2-Q3",
 "body": "Nature of stationary point, differentiation, C1.  <p><img src=\"/database/db/04/04-S2-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2004 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/04/04-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/04/04-S2.tex\"></a></p> "
},
{
 "tags": ["Euclidean geometry"],
 "question_id":2004204,
 "title": "04-S2-Q4",
 "body": "Move rod from corridor, inequality, trigonometry, table-top, C1.  <p><img src=\"/database/db/04/04-S2-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2004 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/04/04-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/04/04-S2.tex\"></a></p> "
},
{
 "tags": ["Integration"],
 "question_id":2004205,
 "title": "04-S2-Q5",
 "body": "Trigonometric integrals, equating coefficients.  <p><img src=\"/database/db/04/04-S2-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2004 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/04/04-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/04/04-S2.tex\"></a></p> "
},
{
 "tags": ["Vector geometry"],
 "question_id":2004206,
 "title": "04-S2-Q6",
 "body": "Planes, perpendicular, parallel, scalar product.  <p><img src=\"/database/db/04/04-S2-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2004 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/04/04-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/04/04-S2.tex\"></a></p> "
},
{
 "tags": ["Interval bisection"],
 "question_id":2004207,
 "title": "04-S2-Q7",
 "body": "Trigonometric equation, sequence of intervals, approximations, C1-ish.  <p><img src=\"/database/db/04/04-S2-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2004 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/04/04-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/04/04-S2.tex\"></a></p> "
},
{
 "tags": ["Differential equations"],
 "question_id":2004208,
 "title": "04-S2-Q8",
 "body": "First order equation, curve sketching, inequality.  <p><img src=\"/database/db/04/04-S2-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2004 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/04/04-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/04/04-S2.tex\"></a></p> "
},
{
 "tags": ["Centre of gravity"],
 "question_id":2004209,
 "title": "04-S2-Q9",
 "body": "Equilibrium, non-uniform solid hemisphere.  <p><img src=\"/database/db/04/04-S2-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2004 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/04/04-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/04/04-S2.tex\"></a></p> "
},
{
 "tags": ["Inclined plane"],
 "question_id":2004210,
 "title": "04-S2-Q10",
 "body": "Friction, projection, collision, loss of energy.  <p><img src=\"/database/db/04/04-S2-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2004 Question 10 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/04/04-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/04/04-S2.tex\"></a></p> "
},
{
 "tags": ["Work and power"],
 "question_id":2004211,
 "title": "04-S2-Q11",
 "body": "Train and engines, velocities, conservation of energy.  <p><img src=\"/database/db/04/04-S2-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2004 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/04/04-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/04/04-S2.tex\"></a></p> "
},
{
 "tags": ["Pdf"],
 "question_id":2004212,
 "title": "04-S2-Q12",
 "body": "Probability density function, mode, median, inequality, conditional probability, curve sketching, gaussian.  <p><img src=\"/database/db/04/04-S2-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2004 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/04/04-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/04/04-S2.tex\"></a></p> "
},
{
 "tags": ["Balls from bags"],
 "question_id":2004213,
 "title": "04-S2-Q13",
 "body": "Expectation, maximise, integer part, C1.  <p><img src=\"/database/db/04/04-S2-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2004 Question 13 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/04/04-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/04/04-S2.tex\"></a></p> "
},
{
 "tags": ["Probability with sets"],
 "question_id":2004214,
 "title": "04-S2-Q14",
 "body": "Union of three events, plum pudding, Christmas, sixpences, C1.  <p><img src=\"/database/db/04/04-S2-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2004 Question 14 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/04/04-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/04/04-S2.tex\"></a></p> "
},
{
 "tags": ["Integration by substitution"],
 "question_id":2004301,
 "title": "04-S3-Q1",
 "body": "Hyperbolic functions, exponential and logarithms, partial fractions.  <p><img src=\"/database/db/04/04-S3-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2004 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/04/04-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/04/04-S3.tex\"></a></p> "
},
{
 "tags": ["Curve sketching"],
 "question_id":2004302,
 "title": "04-S3-Q2",
 "body": "Vertical and oblique asymptotes, tangent, double root.  <p><img src=\"/database/db/04/04-S3-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2004 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/04/04-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/04/04-S3.tex\"></a></p> "
},
{
 "tags": ["Analysis"],
 "question_id":2004303,
 "title": "04-S3-Q3",
 "body": "Approximating an integral, inequalities, sum, inverse square, bounds.  <p><img src=\"/database/db/04/04-S3-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2004 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/04/04-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/04/04-S3.tex\"></a></p> "
},
{
 "tags": ["Euclidean geometry"],
 "question_id":2004304,
 "title": "04-S3-Q4",
 "body": "Isoceles triangle, tangent to circles, ratio of radii, area, C1.  <p><img src=\"/database/db/04/04-S3-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2004 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/04/04-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/04/04-S3.tex\"></a></p> "
},
{
 "tags": ["Trigonometry"],
 "question_id":2004305,
 "title": "04-S3-Q5",
 "body": "Identities, proof, counterexample, general solutions to trigonometric equations.  <p><img src=\"/database/db/04/04-S3-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2004 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/04/04-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/04/04-S3.tex\"></a></p> "
},
{
 "tags": ["Recurrence relations"],
 "question_id":2004306,
 "title": "04-S3-Q6",
 "body": "Difference equations, sequence, proof, period of sequences, C1-ish.  <p><img src=\"/database/db/04/04-S3-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2004 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/04/04-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/04/04-S3.tex\"></a></p> "
},
{
 "tags": ["Integration by parts"],
 "question_id":2004307,
 "title": "04-S3-Q7",
 "body": "Recurrence formula, greatest value, inequality, logarithm.  <p><img src=\"/database/db/04/04-S3-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2004 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/04/04-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/04/04-S3.tex\"></a></p> "
},
{
 "tags": ["Differential equation"],
 "question_id":2004308,
 "title": "04-S3-Q8",
 "body": "Substitution, curve sketching.  <p><img src=\"/database/db/04/04-S3-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2004 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/04/04-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/04/04-S3.tex\"></a></p> "
},
{
 "tags": ["Circular motion"],
 "question_id":2004309,
 "title": "04-S3-Q9",
 "body": "Hoop, equilibrium, mouse, friction.  <p><img src=\"/database/db/04/04-S3-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2004 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/04/04-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/04/04-S3.tex\"></a></p> "
},
{
 "tags": ["Hooke's law"],
 "question_id":2004310,
 "title": "04-S3-Q10",
 "body": "Modulus of elasticity, string, acceleration, inequality.  <p><img src=\"/database/db/04/04-S3-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2004 Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/04/04-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/04/04-S3.tex\"></a></p> "
},
{
 "tags": ["Repulsive force"],
 "question_id":2004311,
 "title": "04-S3-Q11",
 "body": "Second order differential equations.  <p><img src=\"/database/db/04/04-S3-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2004 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/04/04-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/04/04-S3.tex\"></a></p> "
},
{
 "tags": ["Approximations"],
 "question_id":2004312,
 "title": "04-S3-Q12",
 "body": "Expectation, variance and covariances, sum of random variables, Normal and Poisson approximations, relative error.  <p><img src=\"/database/db/04/04-S3-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2004 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/04/04-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/04/04-S3.tex\"></a></p> "
},
{
 "tags": ["Tree diagram"],
 "question_id":2004313,
 "title": "04-S3-Q13",
 "body": "Endurance competition, rounds, elementary probability, C1.  <p><img src=\"/database/db/04/04-S3-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2004 Question 13 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/04/04-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/04/04-S3.tex\"></a></p> "
},
{
 "tags": ["Hypothesis testing"],
 "question_id":2004314,
 "title": "04-S3-Q14",
 "body": "Normal distribution, null and alternative hypothesis, approximations.  <p><img src=\"/database/db/04/04-S3-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2004 Question 14 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/04/04-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/04/04-S3.tex\"></a></p> "
},
{
 "tags": ["Number theory"],
 "question_id":2005101,
 "title": "05-S1-Q1",
 "body": "Sum of digits, C1.  <p><img src=\"/database/db/05/05-S1-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2005 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/05/05-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/05/05-S1.tex\"></a></p> "
},
{
 "tags": ["Coordinate geometry"],
 "question_id":2005102,
 "title": "05-S1-Q2",
 "body": "Parabola, intersection, tangent, quadrilateral, C1.  <p><img src=\"/database/db/05/05-S1-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2005 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/05/05-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/05/05-S1.tex\"></a></p> "
},
{
 "tags": ["Solutions of equation"],
 "question_id":2005103,
 "title": "05-S1-Q3",
 "body": "If and only if, C1.  <p><img src=\"/database/db/05/05-S1-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2005 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/05/05-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/05/05-S1.tex\"></a></p> "
},
{
 "tags": ["Trigonometry"],
 "question_id":2005104,
 "title": "05-S1-Q4",
 "body": "Trigonometric identity, general solution of trig equations. <p><img src=\"/database/db/05/05-S1-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2005 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/05/05-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/05/05-S1.tex\"></a></p> "
},
{
 "tags": ["Integration"],
 "question_id":2005105,
 "title": "05-S1-Q5",
 "body": "Approximation, logarithm.  <p><img src=\"/database/db/05/05-S1-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2005 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/05/05-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/05/05-S1.tex\"></a></p> "
},
{
 "tags": ["Coordinate geometry"],
 "question_id":2005106,
 "title": "05-S1-Q6",
 "body": "Cartesian equation, circle, locus, ratio, C1.  <p><img src=\"/database/db/05/05-S1-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2005 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/05/05-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/05/05-S1.tex\"></a></p> "
},
{
 "tags": ["Product"],
 "question_id":2005107,
 "title": "05-S1-Q7",
 "body": "Manipulation of product sign, trigonometric identity.  <p><img src=\"/database/db/05/05-S1-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2005 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/05/05-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/05/05-S1.tex\"></a></p> "
},
{
 "tags": ["Differential equation"],
 "question_id":2005108,
 "title": "05-S1-Q8",
 "body": "Implicity differentiation, geometrical interpretation, logarithm.  <p><img src=\"/database/db/05/05-S1-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2005 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/05/05-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/05/05-S1.tex\"></a></p> "
},
{
 "tags": ["Friction"],
 "question_id":2005109,
 "title": "05-S1-Q9",
 "body": "Equilibrium, slip prevention, tension.  <p><img src=\"/database/db/05/05-S1-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2005 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/05/05-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/05/05-S1.tex\"></a></p> "
},
{
 "tags": ["Collision"],
 "question_id":2005110,
 "title": "05-S1-Q10",
 "body": "Collinear, coefficient of resititution.  <p><img src=\"/database/db/05/05-S1-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2005 Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/05/05-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/05/05-S1.tex\"></a></p> "
},
{
 "tags": ["Time-distance"],
 "question_id":2005111,
 "title": "05-S1-Q11",
 "body": "Curve sketching, trigonometry, parameteric, velocity.  <p><img src=\"/database/db/05/05-S1-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2005 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/05/05-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/05/05-S1.tex\"></a></p> "
},
{
 "tags": ["Hobbit and Wizard"],
 "question_id":2005112,
 "title": "05-S1-Q12",
 "body": "Elementary probability, Lord the Rings, conditional probability.  <p><img src=\"/database/db/05/05-S1-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2005 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/05/05-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/05/05-S1.tex\"></a></p> "
},
{
 "tags": ["Normal distribution"],
 "question_id":2005113,
 "title": "05-S1-Q13",
 "body": "Continuous random variable, supermarket, milk, estimate, inequality, conditional probability. <p><img src=\"/database/db/05/05-S1-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2005 Question 13 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/05/05-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/05/05-S1.tex\"></a></p> "
},
{
 "tags": ["Discrete random variable"],
 "question_id":2005114,
 "title": "05-S1-Q14",
 "body": "Expectation, median, gaussian, variance.  <p><img src=\"/database/db/05/05-S1-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2005 Question 14 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/05/05-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/05/05-S1.tex\"></a></p> "
},
{
 "tags": ["Polynomials"],
 "question_id":2005201,
 "title": "05-S2-Q1",
 "body": "Differentiation, exponential function.  <p><img src=\"/database/db/05/05-S2-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2005 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/05/05-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/05/05-S2.tex\"></a></p> "
},
{
 "tags": ["Number theory"],
 "question_id":2005202,
 "title": "05-S2-Q2",
 "body": "Euler totient function, prime factors, proof, counterexample, C1.  <p><img src=\"/database/db/05/05-S2-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2005 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/05/05-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/05/05-S2.tex\"></a></p> "
},
{
 "tags": ["Integration"],
 "question_id":2005203,
 "title": "05-S2-Q3",
 "body": "Curve sketching, trigonometry, inequality.  <p><img src=\"/database/db/05/05-S2-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2005 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/05/05-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/05/05-S2.tex\"></a></p> "
},
{
 "tags": ["Trigonometry"],
 "question_id":2005204,
 "title": "05-S2-Q4",
 "body": "Tan identity, proof, simultaneous equations.  <p><img src=\"/database/db/05/05-S2-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2005 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/05/05-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/05/05-S2.tex\"></a></p> "
},
{
 "tags": ["Euclidean geometry"],
 "question_id":2005205,
 "title": "05-S2-Q5",
 "body": "Ratio of area, tangent to circle, triangle, inequality.  <p><img src=\"/database/db/05/05-S2-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2005 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/05/05-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/05/05-S2.tex\"></a></p> "
},
{
 "tags": ["Sum"],
 "question_id":2005206,
 "title": "05-S2-Q6",
 "body": "Differentiation, binomial expansion, general term, series.  <p><img src=\"/database/db/05/05-S2-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2005 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/05/05-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/05/05-S2.tex\"></a></p> "
},
{
 "tags": ["Vectors"],
 "question_id":2005207,
 "title": "05-S2-Q7",
 "body": "Position vectors, geometrical interpretation, angle, time.  <p><img src=\"/database/db/05/05-S2-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2005 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/05/05-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/05/05-S2.tex\"></a></p> "
},
{
 "tags": ["Differential equations"],
 "question_id":2005208,
 "title": "05-S2-Q8",
 "body": "First order equation, curve sketching, approximation.  <p><img src=\"/database/db/05/05-S2-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2005 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/05/05-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/05/05-S2.tex\"></a></p> "
},
{
 "tags": ["Friction"],
 "question_id":2005209,
 "title": "05-S2-Q9",
 "body": "Equilibrium, inclined plane, connected particles, slip.  <p><img src=\"/database/db/05/05-S2-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2005 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/05/05-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/05/05-S2.tex\"></a></p> "
},
{
 "tags": ["Projectile motion"],
 "question_id":2005210,
 "title": "05-S2-Q10",
 "body": "Missile, anti-missile, collision.  <p><img src=\"/database/db/05/05-S2-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2005 Question 10 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/05/05-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/05/05-S2.tex\"></a></p> "
},
{
 "tags": ["Inclined plane"],
 "question_id":2005211,
 "title": "05-S2-Q11",
 "body": "Acceleration, string breaks, maximum point.  <p><img src=\"/database/db/05/05-S2-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2005 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/05/05-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/05/05-S2.tex\"></a></p> "
},
{
 "tags": ["Elementary probability"],
 "question_id":2005212,
 "title": "05-S2-Q12",
 "body": "Coin toss, truth and lies, C1.  <p><img src=\"/database/db/05/05-S2-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2005 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/05/05-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/05/05-S2.tex\"></a></p> "
},
{
 "tags": ["Poisson distribution"],
 "question_id":2005213,
 "title": "05-S2-Q13",
 "body": "Independence, errors, approximation, conditional probability, maximisation.  <p><img src=\"/database/db/05/05-S2-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2005 Question 13 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/05/05-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/05/05-S2.tex\"></a></p> "
},
{
 "tags": ["Pdf"],
 "question_id":2005214,
 "title": "05-S2-Q14",
 "body": "Probability density function, normal distribution, standard deviation, expectation, cumulative distribution function, cdf.  <p><img src=\"/database/db/05/05-S2-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2005 Question 14 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/05/05-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/05/05-S2.tex\"></a></p> "
},
{
 "tags": ["Curve sketching"],
 "question_id":2005301,
 "title": "05-S3-Q1",
 "body": "Trigonometric, modulus functions, solution to equations, general solution.  <p><img src=\"/database/db/05/05-S3-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2005 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/05/05-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/05/05-S3.tex\"></a></p> "
},
{
 "tags": ["Differential equations"],
 "question_id":2005302,
 "title": "05-S3-Q2",
 "body": "General solution, curve sketching, least distance.  <p><img src=\"/database/db/05/05-S3-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2005 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/05/05-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/05/05-S3.tex\"></a></p> "
},
{
 "tags": ["Polynomials"],
 "question_id":2005303,
 "title": "05-S3-Q3",
 "body": "Quadratic, quartic equations, necessary and sufficient, if and only if.  <p><img src=\"/database/db/05/05-S3-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2005 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/05/05-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/05/05-S3.tex\"></a></p> "
},
{
 "tags": ["Recurrence relations"],
 "question_id":2005304,
 "title": "05-S3-Q4",
 "body": "Difference equations, proof by induction, geometric progression, period of sequences.  <p><img src=\"/database/db/05/05-S3-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2005 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/05/05-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/05/05-S3.tex\"></a></p> "
},
{
 "tags": ["Coordinate geometry"],
 "question_id":2005305,
 "title": "05-S3-Q5",
 "body": "Lines, tangent, quadratic equations, common tangents, C1.  <p><img src=\"/database/db/05/05-S3-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2005 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/05/05-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/05/05-S3.tex\"></a></p> "
},
{
 "tags": ["Hyperbolic functions"],
 "question_id":2005306,
 "title": "05-S3-Q6",
 "body": "Complex numbers, roots of equation, cubic equations.  <p><img src=\"/database/db/05/05-S3-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2005 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/05/05-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/05/05-S3.tex\"></a></p> "
},
{
 "tags": ["Integration by substitution"],
 "question_id":2005307,
 "title": "05-S3-Q7",
 "body": "Polynomial substitution.  <p><img src=\"/database/db/05/05-S3-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2005 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/05/05-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/05/05-S3.tex\"></a></p> "
},
{
 "tags": ["Complex numbers"],
 "question_id":2005308,
 "title": "05-S3-Q8",
 "body": "Argand diagram, triangle, circle, tangent.  <p><img src=\"/database/db/05/05-S3-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2005 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/05/05-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/05/05-S3.tex\"></a></p> "
},
{
 "tags": ["Collision"],
 "question_id":2005309,
 "title": "05-S3-Q9",
 "body": "Coefficient of restitution, rebound.  <p><img src=\"/database/db/05/05-S3-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2005 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/05/05-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/05/05-S3.tex\"></a></p> "
},
{
 "tags": ["Collision"],
 "question_id":2005310,
 "title": "05-S3-Q10",
 "body": "Friction, kinetic energy, inequality.  <p><img src=\"/database/db/05/05-S3-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2005 Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/05/05-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/05/05-S3.tex\"></a></p> "
},
{
 "tags": ["Circular motion"],
 "question_id":2005311,
 "title": "05-S3-Q11",
 "body": "Energy of system in (stable) equilibrium, angular velocity.  <p><img src=\"/database/db/05/05-S3-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2005 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/05/05-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/05/05-S3.tex\"></a></p> "
},
{
 "tags": ["Sum of random variables"],
 "question_id":2005312,
 "title": "05-S3-Q12",
 "body": "Independent, runners, continuous random variable, interval estimation.  <p><img src=\"/database/db/05/05-S3-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2005 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/05/05-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/05/05-S3.tex\"></a></p> "
},
{
 "tags": ["Pack of cards"],
 "question_id":2005313,
 "title": "05-S3-Q13",
 "body": "Expectation.  <p><img src=\"/database/db/05/05-S3-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2005 Question 13 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/05/05-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/05/05-S3.tex\"></a></p> "
},
{
 "tags": ["Continuous random variable"],
 "question_id":2005314,
 "title": "05-S3-Q14",
 "body": "Integration by substitution, density function, median, expectation, gas molecule.  <p><img src=\"/database/db/05/05-S3-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2005 Question 14 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/05/05-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/05/05-S3.tex\"></a></p> "
},
{
 "tags": ["Number theory"],
 "question_id":2006101,
 "title": "06-S1-Q1",
 "body": "Perfect square, inequality, factors, C1.  <p><img src=\"/database/db/06/06-S1-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2006 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/06/06-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/06/06-S1.tex\"></a></p> "
},
{
 "tags": ["Optimisation"],
 "question_id":2006102,
 "title": "06-S1-Q2",
 "body": "Goat, rope, barn, differentiation, C1.  <p><img src=\"/database/db/06/06-S1-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2006 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/06/06-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/06/06-S1.tex\"></a></p> "
},
{
 "tags": ["Quadratic equations"],
 "question_id":2006103,
 "title": "06-S1-Q3",
 "body": "Roots, determinant, necessary and sufficient, cubic equations, C1.  <p><img src=\"/database/db/06/06-S1-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2006 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/06/06-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/06/06-S1.tex\"></a></p> "
},
{
 "tags": ["Elementary geometry"],
 "question_id":2006104,
 "title": "06-S1-Q4",
 "body": "Area and perimeter of polygon, curve sketching, trigonometry, mainimisation, differentiation, C1-ish. <p><img src=\"/database/db/06/06-S1-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2006 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/06/06-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/06/06-S1.tex\"></a></p> "
},
{
 "tags": ["Integration by substitution"],
 "question_id":2006105,
 "title": "06-S1-Q5",
 "body": "Polynomial substitution, exponential and logarithms.  <p><img src=\"/database/db/06/06-S1-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2006 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/06/06-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/06/06-S1.tex\"></a></p> "
},
{
 "tags": ["Coordinate geometry"],
 "question_id":2006106,
 "title": "06-S1-Q6",
 "body": "Hyperbolas, curve, postive integers, C1.  <p><img src=\"/database/db/06/06-S1-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2006 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/06/06-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/06/06-S1.tex\"></a></p> "
},
{
 "tags": ["Integration"],
 "question_id":2006107,
 "title": "06-S1-Q7",
 "body": "Trigonometry, modulus, exponential function, curve sketching, roots of equation.  <p><img src=\"/database/db/06/06-S1-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2006 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/06/06-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/06/06-S1.tex\"></a></p> "
},
{
 "tags": ["Coordinate geometry"],
 "question_id":2006108,
 "title": "06-S1-Q8",
 "body": "Tetrahedron, volume, triangle, C1.  <p><img src=\"/database/db/06/06-S1-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2006 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/06/06-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/06/06-S1.tex\"></a></p> "
},
{
 "tags": ["Pulley"],
 "question_id":2006109,
 "title": "06-S1-Q9",
 "body": "Equilibrium.  <p><img src=\"/database/db/06/06-S1-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2006 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/06/06-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/06/06-S1.tex\"></a></p> "
},
{
 "tags": ["Projectile motion"],
 "question_id":2006110,
 "title": "06-S1-Q10",
 "body": "Equation of trajectory, trigonometry, slide along a rail.  <p><img src=\"/database/db/06/06-S1-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2006 Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/06/06-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/06/06-S1.tex\"></a></p> "
},
{
 "tags": ["Collision"],
 "question_id":2006111,
 "title": "06-S1-Q11",
 "body": "Conservation of energy and momentum.  <p><img src=\"/database/db/06/06-S1-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2006 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/06/06-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/06/06-S1.tex\"></a></p> "
},
{
 "tags": ["Oxtown and Camville"],
 "question_id":2006112,
 "title": "06-S1-Q12",
 "body": "Elementary probability, road blocks, limit, conditional probability, C1.  <p><img src=\"/database/db/06/06-S1-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2006 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/06/06-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/06/06-S1.tex\"></a></p> "
},
{
 "tags": ["Dice roll"],
 "question_id":2006113,
 "title": "06-S1-Q13",
 "body": "Diamond in chocolate bars, expectation, binomial expansion. <p><img src=\"/database/db/06/06-S1-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2006 Question 13 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/06/06-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/06/06-S1.tex\"></a></p> "
},
{
 "tags": ["Sampling with/out replacement"],
 "question_id":2006114,
 "title": "06-S1-Q14",
 "body": "Bag of sweet, maximisation, C1.  <p><img src=\"/database/db/06/06-S1-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2006 Question 14 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/06/06-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/06/06-S1.tex\"></a></p> "
},
{
 "tags": ["Difference equation"],
 "question_id":2006201,
 "title": "06-S2-Q1",
 "body": "Recurrence relations, period of sequences, limit, convergence.  <p><img src=\"/database/db/06/06-S2-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2006 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/06/06-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/06/06-S2.tex\"></a></p> "
},
{
 "tags": ["Analysis"],
 "question_id":2006202,
 "title": "06-S2-Q2",
 "body": "Curve sketching, turning points, differentiation, exponential function, inequality.  <p><img src=\"/database/db/06/06-S2-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2006 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/06/06-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/06/06-S2.tex\"></a></p> "
},
{
 "tags": ["Inequality"],
 "question_id":2006203,
 "title": "06-S2-Q3",
 "body": "Surds, square root functions, binomial expansion, approximation, C1-ish.  <p><img src=\"/database/db/06/06-S2-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2006 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/06/06-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/06/06-S2.tex\"></a></p> "
},
{
 "tags": ["Integration by substitution"],
 "question_id":2006204,
 "title": "06-S2-Q4",
 "body": "Trigonometry, modulus function, change of period.  <p><img src=\"/database/db/06/06-S2-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2006 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/06/06-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/06/06-S2.tex\"></a></p> "
},
{
 "tags": ["Floor function"],
 "question_id":2006205,
 "title": "06-S2-Q5",
 "body": "Curve sketching, quadratics, area under curve, integer part, C1.  <p><img src=\"/database/db/06/06-S2-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2006 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/06/06-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/06/06-S2.tex\"></a></p> "
},
{
 "tags": ["Inequality"],
 "question_id":2006206,
 "title": "06-S2-Q6",
 "body": "Proof, simultaneous equations, C1.  <p><img src=\"/database/db/06/06-S2-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2006 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/06/06-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/06/06-S2.tex\"></a></p> "
},
{
 "tags": ["Coordinate geometry"],
 "question_id":2006207,
 "title": "06-S2-Q7",
 "body": "Curve sketching, ellipse, tangent.  <p><img src=\"/database/db/06/06-S2-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2006 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/06/06-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/06/06-S2.tex\"></a></p> "
},
{
 "tags": ["Vector geometry"],
 "question_id":2006208,
 "title": "06-S2-Q8",
 "body": "Equation of line, position vectors, trapezium, ratio.  <p><img src=\"/database/db/06/06-S2-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2006 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/06/06-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/06/06-S2.tex\"></a></p> "
},
{
 "tags": ["Ladder"],
 "question_id":2006209,
 "title": "06-S2-Q9",
 "body": "Friction, slip.  <p><img src=\"/database/db/06/06-S2-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2006 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/06/06-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/06/06-S2.tex\"></a></p> "
},
{
 "tags": ["Collision"],
 "question_id":2006210,
 "title": "06-S2-Q10",
 "body": "Coefficient of restitution, second time.  <p><img src=\"/database/db/06/06-S2-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2006 Question 10 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/06/06-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/06/06-S2.tex\"></a></p> "
},
{
 "tags": ["Projectile motion"],
 "question_id":2006211,
 "title": "06-S2-Q11",
 "body": "Horizontal force, blow back, maximisation.  <p><img src=\"/database/db/06/06-S2-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2006 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/06/06-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/06/06-S2.tex\"></a></p> "
},
{
 "tags": ["Binomial distribution"],
 "question_id":2006212,
 "title": "06-S2-Q12",
 "body": "Approximation, cricket.  <p><img src=\"/database/db/06/06-S2-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2006 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/06/06-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/06/06-S2.tex\"></a></p> "
},
{
 "tags": ["Elementary probability"],
 "question_id":2006213,
 "title": "06-S2-Q13",
 "body": "Strategy, C1.  <p><img src=\"/database/db/06/06-S2-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2006 Question 13 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/06/06-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/06/06-S2.tex\"></a></p> "
},
{
 "tags": ["Continuous random variable"],
 "question_id":2006214,
 "title": "06-S2-Q14",
 "body": "Probability density function, curve sketching, pdf.  <p><img src=\"/database/db/06/06-S2-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2006 Question 14 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/06/06-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/06/06-S2.tex\"></a></p> "
},
{
 "tags": ["Curve sketching"],
 "question_id":2006301,
 "title": "06-S3-Q1",
 "body": "Vertical and oblique asymptotes, roots of equations, C1.  <p><img src=\"/database/db/06/06-S3-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2006 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/06/06-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/06/06-S3.tex\"></a></p> "
},
{
 "tags": ["Integration"],
 "question_id":2006302,
 "title": "06-S3-Q2",
 "body": "Trigonometry, substitution.  <p><img src=\"/database/db/06/06-S3-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2006 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/06/06-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/06/06-S3.tex\"></a></p> "
},
{
 "tags": ["Series"],
 "question_id":2006303,
 "title": "06-S3-Q3",
 "body": "Maclaurin, taylor series for trigonometric functions, recurrence, difference equations, comparing coefficients, identity.  <p><img src=\"/database/db/06/06-S3-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2006 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/06/06-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/06/06-S3.tex\"></a></p> "
},
{
 "tags": ["Functional equations"],
 "question_id":2006304,
 "title": "06-S3-Q4",
 "body": "Logarithm, exponential and trigonometric functions, Maclaurin series.  <p><img src=\"/database/db/06/06-S3-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2006 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/06/06-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/06/06-S3.tex\"></a></p> "
},
{
 "tags": ["Complex numbers"],
 "question_id":2006305,
 "title": "06-S3-Q5",
 "body": "Roots of unity, equilateral triangle, transformation.  <p><img src=\"/database/db/06/06-S3-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2006 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/06/06-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/06/06-S3.tex\"></a></p> "
},
{
 "tags": ["Polar coordinates"],
 "question_id":2006306,
 "title": "06-S3-Q6",
 "body": "Gradient, implicit differentiation, mirror, incident and reflected ray.  <p><img src=\"/database/db/06/06-S3-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2006 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/06/06-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/06/06-S3.tex\"></a></p> "
},
{
 "tags": ["Differential equation"],
 "question_id":2006307,
 "title": "06-S3-Q7",
 "body": "Hyperbolic functions, asymptotes.  <p><img src=\"/database/db/06/06-S3-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2006 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/06/06-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/06/06-S3.tex\"></a></p> "
},
{
 "tags": ["Diamond derivatives"],
 "question_id":2006308,
 "title": "06-S3-Q8",
 "body": "Differentiation, proof, first principle, polynomial, C1.  <p><img src=\"/database/db/06/06-S3-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2006 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/06/06-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/06/06-S3.tex\"></a></p> "
},
{
 "tags": ["Energy"],
 "question_id":2006309,
 "title": "06-S3-Q9",
 "body": "Bead on wire, projection, first order differential equation.  <p><img src=\"/database/db/06/06-S3-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2006 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/06/06-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/06/06-S3.tex\"></a></p> "
},
{
 "tags": ["Circular motion"],
 "question_id":2006310,
 "title": "06-S3-Q10",
 "body": "Angular velocity, substitution, hyperbolic function, differential equation.  <p><img src=\"/database/db/06/06-S3-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2006 Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/06/06-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/06/06-S3.tex\"></a></p> "
},
{
 "tags": ["Collision"],
 "question_id":2006311,
 "title": "06-S3-Q11",
 "body": "Coefficient of restitution, pulley, loss of energy of impact, lift.  <p><img src=\"/database/db/06/06-S3-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2006 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/06/06-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/06/06-S3.tex\"></a></p> "
},
{
 "tags": ["Normal distributions"],
 "question_id":2006312,
 "title": "06-S3-Q12",
 "body": "Cruise liner, approximation, cdf.  <p><img src=\"/database/db/06/06-S3-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2006 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/06/06-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/06/06-S3.tex\"></a></p> "
},
{
 "tags": ["Geometrical probability"],
 "question_id":2006313,
 "title": "06-S3-Q13",
 "body": "Points on permieter of semicircle, independent, expectation, area of triangle.  <p><img src=\"/database/db/06/06-S3-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2006 Question 13 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/06/06-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/06/06-S3.tex\"></a></p> "
},
{
 "tags": ["Independence"],
 "question_id":2006314,
 "title": "06-S3-Q14",
 "body": "Industrial process, expectation algebra, variance, standard deviation.  <p><img src=\"/database/db/06/06-S3-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2006 Question 14 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/06/06-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/06/06-S3.tex\"></a></p> "
},
{
 "tags": ["Number theory"],
 "question_id":2007101,
 "title": "07-S1-Q1",
 "body": "Balanced number, sum of digits, C1.  <p><img src=\"/database/db/07/07-S1-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2007 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/07/07-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/07/07-S1.tex\"></a></p> "
},
{
 "tags": ["Trigonometry"],
 "question_id":2007102,
 "title": "07-S1-Q2",
 "body": "Identity, arctan, highest common factor, hcf.  <p><img src=\"/database/db/07/07-S1-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2007 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/07/07-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/07/07-S1.tex\"></a></p> "
},
{
 "tags": ["Integration"],
 "question_id":2007103,
 "title": "07-S1-Q3",
 "body": "Trigonometry, identity.  <p><img src=\"/database/db/07/07-S1-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2007 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/07/07-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/07/07-S1.tex\"></a></p> "
},
{
 "tags": ["Cubic equations"],
 "question_id":2007104,
 "title": "07-S1-Q4",
 "body": "Quadratic equations, factor, perfect square, root, C1. <p><img src=\"/database/db/07/07-S1-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2007 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/07/07-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/07/07-S1.tex\"></a></p> "
},
{
 "tags": ["Elementary geometry"],
 "question_id":2007105,
 "title": "07-S1-Q5",
 "body": "Octahedron, polyhedron, equilateral triangle, volume, faces, vertices, ratio, C1.  <p><img src=\"/database/db/07/07-S1-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2007 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/07/07-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/07/07-S1.tex\"></a></p> "
},
{
 "tags": ["Numbers"],
 "question_id":2007106,
 "title": "07-S1-Q6",
 "body": "Quadratic equations, square roots, cubic, factorisation, positive integers, C1.  <p><img src=\"/database/db/07/07-S1-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2007 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/07/07-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/07/07-S1.tex\"></a></p> "
},
{
 "tags": ["Vectors"],
 "question_id":2007107,
 "title": "07-S1-Q7",
 "body": "Equation of line, minimum distance.  <p><img src=\"/database/db/07/07-S1-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2007 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/07/07-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/07/07-S1.tex\"></a></p> "
},
{
 "tags": ["Curve sketching"],
 "question_id":2007108,
 "title": "07-S1-Q8",
 "body": "Cubic equations, intersection, C1.  <p><img src=\"/database/db/07/07-S1-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2007 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/07/07-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/07/07-S1.tex\"></a></p> "
},
{
 "tags": ["Friction"],
 "question_id":2007109,
 "title": "07-S1-Q9",
 "body": "Inclined plane, inequality.  <p><img src=\"/database/db/07/07-S1-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2007 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/07/07-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/07/07-S1.tex\"></a></p> "
},
{
 "tags": ["Norman army"],
 "question_id":2007110,
 "title": "07-S1-Q10",
 "body": "Time-distance, horsemen, Saxon army, inequality, C1.  <p><img src=\"/database/db/07/07-S1-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2007 Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/07/07-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/07/07-S1.tex\"></a></p> "
},
{
 "tags": ["Projectile motion"],
 "question_id":2007111,
 "title": "07-S1-Q11",
 "body": "Distance equation, differentiation.  <p><img src=\"/database/db/07/07-S1-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2007 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/07/07-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/07/07-S1.tex\"></a></p> "
},
{
 "tags": ["Coin and sweets"],
 "question_id":2007112,
 "title": "07-S1-Q12",
 "body": "Elementary probability, C1.  <p><img src=\"/database/db/07/07-S1-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2007 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/07/07-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/07/07-S1.tex\"></a></p> "
},
{
 "tags": ["Sampling with/out replacement"],
 "question_id":2007113,
 "title": "07-S1-Q13",
 "body": "Discs, conditional probability, C1. <p><img src=\"/database/db/07/07-S1-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2007 Question 13 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/07/07-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/07/07-S1.tex\"></a></p> "
},
{
 "tags": ["Poisson distribution"],
 "question_id":2007114,
 "title": "07-S1-Q14",
 "body": "Curve sketching, discrete random variable.  <p><img src=\"/database/db/07/07-S1-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2007 Question 14 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/07/07-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/07/07-S1.tex\"></a></p> "
},
{
 "tags": ["Binomial approximations"],
 "question_id":2007201,
 "title": "07-S2-Q1",
 "body": "Binomial expansion, square roots, decimal places.  <p><img src=\"/database/db/07/07-S2-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2007 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/07/07-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/07/07-S2.tex\"></a></p> "
},
{
 "tags": ["Cubic equation"],
 "question_id":2007202,
 "title": "07-S2-Q2",
 "body": "Curve sketching, turning points, differentiation, area enclosed, symmetry, C1.  <p><img src=\"/database/db/07/07-S2-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2007 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/07/07-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/07/07-S2.tex\"></a></p> "
},
{
 "tags": ["Integration by substitution"],
 "question_id":2007203,
 "title": "07-S2-Q3",
 "body": "tan half angle substitution, t-sub, arctan, trigonometry.  <p><img src=\"/database/db/07/07-S2-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2007 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/07/07-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/07/07-S2.tex\"></a></p> "
},
{
 "tags": ["Trigonometry"],
 "question_id":2007204,
 "title": "07-S2-Q4",
 "body": "Identity manipulation, solution to equations.  <p><img src=\"/database/db/07/07-S2-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2007 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/07/07-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/07/07-S2.tex\"></a></p> "
},
{
 "tags": ["Functions"],
 "question_id":2007205,
 "title": "07-S2-Q5",
 "body": "Composition of functions, trigonometry, periodicity, C1.  <p><img src=\"/database/db/07/07-S2-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2007 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/07/07-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/07/07-S2.tex\"></a></p> "
},
{
 "tags": ["Differential equation"],
 "question_id":2007206,
 "title": "07-S2-Q6",
 "body": "Differentiation, logarithm function, quadratic equation.  <p><img src=\"/database/db/07/07-S2-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2007 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/07/07-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/07/07-S2.tex\"></a></p> "
},
{
 "tags": ["Jensen's inequality"],
 "question_id":2007207,
 "title": "07-S2-Q7",
 "body": "Concave functions, inequalities, minimum value, C1.  <p><img src=\"/database/db/07/07-S2-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2007 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/07/07-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/07/07-S2.tex\"></a></p> "
},
{
 "tags": ["Vector geometry"],
 "question_id":2007208,
 "title": "07-S2-Q8",
 "body": "Position vector, locus, ratio, intersection.  <p><img src=\"/database/db/07/07-S2-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2007 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/07/07-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/07/07-S2.tex\"></a></p> "
},
{
 "tags": ["Collision"],
 "question_id":2007209,
 "title": "07-S2-Q9",
 "body": "Coefficient of restitution, circulr cone, impact, greatest value.  <p><img src=\"/database/db/07/07-S2-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2007 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/07/07-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/07/07-S2.tex\"></a></p> "
},
{
 "tags": ["Friction"],
 "question_id":2007210,
 "title": "07-S2-Q10",
 "body": "Coefficient of restitution, solid cylinder, hemisphere, equilibrium.  <p><img src=\"/database/db/07/07-S2-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2007 Question 10 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/07/07-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/07/07-S2.tex\"></a></p> "
},
{
 "tags": ["Projectile motion"],
 "question_id":2007211,
 "title": "07-S2-Q11",
 "body": "vector, maximum height, bullet.  <p><img src=\"/database/db/07/07-S2-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2007 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/07/07-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/07/07-S2.tex\"></a></p> "
},
{
 "tags": ["Dice"],
 "question_id":2007212,
 "title": "07-S2-Q12",
 "body": "Binomial distribution, expectation, large approximation.  <p><img src=\"/database/db/07/07-S2-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2007 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/07/07-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/07/07-S2.tex\"></a></p> "
},
{
 "tags": ["Birthday problem"],
 "question_id":2007213,
 "title": "07-S2-Q13",
 "body": "Elementary probability, same birthday, C1.  <p><img src=\"/database/db/07/07-S2-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2007 Question 13 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/07/07-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/07/07-S2.tex\"></a></p> "
},
{
 "tags": ["Pdf"],
 "question_id":2007214,
 "title": "07-S2-Q14",
 "body": "Probability density function, curve sketching, median.  <p><img src=\"/database/db/07/07-S2-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2007 Question 14 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/07/07-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/07/07-S2.tex\"></a></p> "
},
{
 "tags": ["Trigonometry"],
 "question_id":2007301,
 "title": "07-S3-Q1",
 "body": "tan, identities, quartic equations.  <p><img src=\"/database/db/07/07-S3-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2007 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/07/07-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/07/07-S3.tex\"></a></p> "
},
{
 "tags": ["Sum"],
 "question_id":2007302,
 "title": "07-S3-Q2",
 "body": "Product, binomial expansion, differentiation.  <p><img src=\"/database/db/07/07-S3-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2007 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/07/07-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/07/07-S3.tex\"></a></p> "
},
{
 "tags": ["Fibonacci numbers"],
 "question_id":2007303,
 "title": "07-S3-Q3",
 "body": "Number theory, proof by induction, divisibility.  <p><img src=\"/database/db/07/07-S3-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2007 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/07/07-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/07/07-S3.tex\"></a></p> "
},
{
 "tags": ["Parametric equations"],
 "question_id":2007304,
 "title": "07-S3-Q4",
 "body": "Curve sketching, tangent to curve, radius of curvature, normal, parallel.  <p><img src=\"/database/db/07/07-S3-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2007 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/07/07-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/07/07-S3.tex\"></a></p> "
},
{
 "tags": ["Differential equations"],
 "question_id":2007305,
 "title": "07-S3-Q5",
 "body": "Polar coordinates, logarithmic and hyperbolic functions, proof.  <p><img src=\"/database/db/07/07-S3-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2007 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/07/07-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/07/07-S3.tex\"></a></p> "
},
{
 "tags": ["Complex numbers"],
 "question_id":2007306,
 "title": "07-S3-Q6",
 "body": "Argand diagram, circle, geometry.  <p><img src=\"/database/db/07/07-S3-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2007 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/07/07-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/07/07-S3.tex\"></a></p> "
},
{
 "tags": ["Integration by substitution"],
 "question_id":2007307,
 "title": "07-S3-Q7",
 "body": "Trigonometry.  <p><img src=\"/database/db/07/07-S3-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2007 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/07/07-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/07/07-S3.tex\"></a></p> "
},
{
 "tags": ["Differential equations"],
 "question_id":2007308,
 "title": "07-S3-Q8",
 "body": "Substitution, transform, general solution, linearity.  <p><img src=\"/database/db/07/07-S3-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2007 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/07/07-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/07/07-S3.tex\"></a></p> "
},
{
 "tags": ["SHM"],
 "question_id":2007309,
 "title": "07-S3-Q9",
 "body": "Period of simple harmonic motion, energy in spring.  <p><img src=\"/database/db/07/07-S3-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2007 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/07/07-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/07/07-S3.tex\"></a></p> "
},
{
 "tags": ["Projectile motion"],
 "question_id":2007310,
 "title": "07-S3-Q10",
 "body": "Inclined plane, range, maximisation.  <p><img src=\"/database/db/07/07-S3-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2007 Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/07/07-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/07/07-S3.tex\"></a></p> "
},
{
 "tags": ["Friction"],
 "question_id":2007311,
 "title": "07-S3-Q11",
 "body": "Beads rolling, circular hoop, slip.  <p><img src=\"/database/db/07/07-S3-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2007 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/07/07-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/07/07-S3.tex\"></a></p> "
},
{
 "tags": ["Discrete random variables"],
 "question_id":2007312,
 "title": "07-S3-Q12",
 "body": "Expectation, variance and covariances, sum of random variables.  <p><img src=\"/database/db/07/07-S3-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2007 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/07/07-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/07/07-S3.tex\"></a></p> "
},
{
 "tags": ["Random walk"],
 "question_id":2007313,
 "title": "07-S3-Q13",
 "body": "Frog jumping towards pond, Markov chain.  <p><img src=\"/database/db/07/07-S3-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2007 Question 13 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/07/07-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/07/07-S3.tex\"></a></p> "
},
{
 "tags": ["Geometrical probability"],
 "question_id":2007314,
 "title": "07-S3-Q14",
 "body": "Dartboard, circles, expectation.  <p><img src=\"/database/db/07/07-S3-Q14.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2007 Question 14 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/07/07-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/07/07-S3.tex\"></a></p> "
},
{
 "tags": ["Number theory"],
 "question_id":2008101,
 "title": "08-S1-Q1",
 "body": "Irrationality, proof by contradiction, C1.  <p><img src=\"/database/db/08/08-S1-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2008 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/08/08-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/08/08-S1.tex\"></a></p> "
},
{
 "tags": ["Differentiation"],
 "question_id":2008102,
 "title": "08-S1-Q2",
 "body": "Integration.  <p><img src=\"/database/db/08/08-S1-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2008 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/08/08-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/08/08-S1.tex\"></a></p> "
},
{
 "tags": ["Inequalities"],
 "question_id":2008103,
 "title": "08-S1-Q3",
 "body": "Squares, sum of squares, C1.  <p><img src=\"/database/db/08/08-S1-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2008 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/08/08-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/08/08-S1.tex\"></a></p> "
},
{
 "tags": ["Convex functions"],
 "question_id":2008104,
 "title": "08-S1-Q4",
 "body": "Curve sketching, exponential and trigonometric functions, differentiation. <p><img src=\"/database/db/08/08-S1-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2008 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/08/08-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/08/08-S1.tex\"></a></p> "
},
{
 "tags": ["Chebyshev's theorem"],
 "question_id":2008105,
 "title": "08-S1-Q5",
 "body": "Analysis, polynomials, turning point, C1.  <p><img src=\"/database/db/08/08-S1-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2008 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/08/08-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/08/08-S1.tex\"></a></p> "
},
{
 "tags": ["Inverse functions"],
 "question_id":2008106,
 "title": "08-S1-Q6",
 "body": "Curve sketching, integration.  <p><img src=\"/database/db/08/08-S1-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2008 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/08/08-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/08/08-S1.tex\"></a></p> "
},
{
 "tags": ["Coordinate geometry"],
 "question_id":2008107,
 "title": "08-S1-Q7",
 "body": "Rotation, equilateral triangle, C1.  <p><img src=\"/database/db/08/08-S1-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2008 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/08/08-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/08/08-S1.tex\"></a></p> "
},
{
 "tags": ["Differential equation"],
 "question_id":2008108,
 "title": "08-S1-Q8",
 "body": "Line, circle, parabola.  <p><img src=\"/database/db/08/08-S1-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2008 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/08/08-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/08/08-S1.tex\"></a></p> "
},
{
 "tags": ["Kinetic energy"],
 "question_id":2008109,
 "title": "08-S1-Q9",
 "body": "Rolling hoop.  <p><img src=\"/database/db/08/08-S1-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2008 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/08/08-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/08/08-S1.tex\"></a></p> "
},
{
 "tags": ["Projectile motion"],
 "question_id":2008110,
 "title": "08-S1-Q10",
 "body": "Zog, trajectory sketching, range.  <p><img src=\"/database/db/08/08-S1-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2008 Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/08/08-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/08/08-S1.tex\"></a></p> "
},
{
 "tags": ["Friction"],
 "question_id":2008111,
 "title": "08-S1-Q11",
 "body": "Limiting equilibrium, coefficient of friction, geometry.  <p><img src=\"/database/db/08/08-S1-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2008 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/08/08-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/08/08-S1.tex\"></a></p> "
},
{
 "tags": ["Discrete random variables"],
 "question_id":2008112,
 "title": "08-S1-Q12",
 "body": "Expectation, median.  <p><img src=\"/database/db/08/08-S1-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2008 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/08/08-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/08/08-S1.tex\"></a></p> "
},
{
 "tags": ["Combinatorics"],
 "question_id":2008113,
 "title": "08-S1-Q13",
 "body": "Married couples sitting at a table, elementary probability, C1. <p><img src=\"/database/db/08/08-S1-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2008 Question 13 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/08/08-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/08/08-S1.tex\"></a></p> "
},
{
 "tags": ["Sequences"],
 "question_id":2008201,
 "title": "08-S2-Q1",
 "body": "Difference equations, recurrence, period of sequences, C1.  <p><img src=\"/database/db/08/08-S2-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2008 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/08/08-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/08/08-S2.tex\"></a></p> "
},
{
 "tags": ["Binomial expansion"],
 "question_id":2008202,
 "title": "08-S2-Q2",
 "body": "Binomial coefficient, partial fractions.  <p><img src=\"/database/db/08/08-S2-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2008 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/08/08-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/08/08-S2.tex\"></a></p> "
},
{
 "tags": ["Cubic equations"],
 "question_id":2008203,
 "title": "08-S2-Q3",
 "body": "Proof by contradiction, inequality, curve sketching, C1.  <p><img src=\"/database/db/08/08-S2-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2008 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/08/08-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/08/08-S2.tex\"></a></p> "
},
{
 "tags": ["Differentiation"],
 "question_id":2008204,
 "title": "08-S2-Q4",
 "body": "Implicit differentiation, tangent and normals.  <p><img src=\"/database/db/08/08-S2-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2008 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/08/08-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/08/08-S2.tex\"></a></p> "
},
{
 "tags": ["Integrals"],
 "question_id":2008205,
 "title": "08-S2-Q5",
 "body": "Approximation using binomial expansion, trigonometry.  <p><img src=\"/database/db/08/08-S2-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2008 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/08/08-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/08/08-S2.tex\"></a></p> "
},
{
 "tags": ["Trigonometry"],
 "question_id":2008206,
 "title": "08-S2-Q6",
 "body": "Period of function.  <p><img src=\"/database/db/08/08-S2-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2008 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/08/08-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/08/08-S2.tex\"></a></p> "
},
{
 "tags": ["Differential equation"],
 "question_id":2008207,
 "title": "08-S2-Q7",
 "body": "Substitution, general solution, conjecture.  <p><img src=\"/database/db/08/08-S2-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2008 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/08/08-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/08/08-S2.tex\"></a></p> "
},
{
 "tags": ["Vector geometry"],
 "question_id":2008208,
 "title": "08-S2-Q8",
 "body": "Ratio, position vector, bisection.  <p><img src=\"/database/db/08/08-S2-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2008 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/08/08-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/08/08-S2.tex\"></a></p> "
},
{
 "tags": ["Projectile motion"],
 "question_id":2008209,
 "title": "08-S2-Q9",
 "body": "Cricket bowler, small angle approximation.  <p><img src=\"/database/db/08/08-S2-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2008 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/08/08-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/08/08-S2.tex\"></a></p> "
},
{
 "tags": ["Collision"],
 "question_id":2008210,
 "title": "08-S2-Q10",
 "body": "Billards table, coefficient of restitution, kinetic energy.  <p><img src=\"/database/db/08/08-S2-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2008 Question 10 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/08/08-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/08/08-S2.tex\"></a></p> "
},
{
 "tags": ["Friction"],
 "question_id":2008211,
 "title": "08-S2-Q11",
 "body": "Wedge, acceleration.  <p><img src=\"/database/db/08/08-S2-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2008 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/08/08-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/08/08-S2.tex\"></a></p> "
},
{
 "tags": ["Court of Farnia"],
 "question_id":2008212,
 "title": "08-S2-Q12",
 "body": "Discrete random variable, elementary probability, expectation, conditional probability.  <p><img src=\"/database/db/08/08-S2-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2008 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/08/08-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/08/08-S2.tex\"></a></p> "
},
{
 "tags": ["Sampling with/out replacement"],
 "question_id":2008213,
 "title": "08-S2-Q13",
 "body": "Elementary probability, bag and counters, maximisation, C1.  <p><img src=\"/database/db/08/08-S2-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2008 Question 13 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/08/08-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/08/08-S2.tex\"></a></p> "
},
{
 "tags": ["Simultaneous equations"],
 "question_id":2008301,
 "title": "08-S3-Q1",
 "body": "Linear systems, C1.  <p><img src=\"/database/db/08/08-S3-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2008 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/08/08-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/08/08-S3.tex\"></a></p> "
},
{
 "tags": ["Polynomials"],
 "question_id":2008302,
 "title": "08-S3-Q2",
 "body": "Binomial coefficients, sum of powers, degrees of polynomial, sum of coefficients.  <p><img src=\"/database/db/08/08-S3-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2008 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/08/08-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/08/08-S3.tex\"></a></p> "
},
{
 "tags": ["Conic sections"],
 "question_id":2008303,
 "title": "08-S3-Q3",
 "body": "Ellipse, focus, circle, intersection, geometry.  <p><img src=\"/database/db/08/08-S3-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2008 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/08/08-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/08/08-S3.tex\"></a></p> "
},
{
 "tags": ["Inequality"],
 "question_id":2008304,
 "title": "08-S3-Q4",
 "body": "Functions, inverse hyperbolic functions, integration, curve sketching.  <p><img src=\"/database/db/08/08-S3-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2008 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/08/08-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/08/08-S3.tex\"></a></p> "
},
{
 "tags": ["Chebyshev's polynomial"],
 "question_id":2008305,
 "title": "08-S3-Q5",
 "body": "Recurrence relation, proof by induction.  <p><img src=\"/database/db/08/08-S3-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2008 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/08/08-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/08/08-S3.tex\"></a></p> "
},
{
 "tags": ["Differential equation"],
 "question_id":2008306,
 "title": "08-S3-Q6",
 "body": "Implicit differentiation, substitution.  <p><img src=\"/database/db/08/08-S3-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2008 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/08/08-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/08/08-S3.tex\"></a></p> "
},
{
 "tags": ["Complex number"],
 "question_id":2008307,
 "title": "08-S3-Q7",
 "body": "Argand diagram, equilateral triangle, rotation, centroid.  <p><img src=\"/database/db/08/08-S3-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2008 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/08/08-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/08/08-S3.tex\"></a></p> "
},
{
 "tags": ["Infinite series"],
 "question_id":2008308,
 "title": "08-S3-Q8",
 "body": "Recurrence relations, coefficients, partial fractions.  <p><img src=\"/database/db/08/08-S3-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2008 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/08/08-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/08/08-S3.tex\"></a></p> "
},
{
 "tags": ["Time-distance"],
 "question_id":2008309,
 "title": "08-S3-Q9",
 "body": "Acceleration, sinusoidal force, curve sketching.  <p><img src=\"/database/db/08/08-S3-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2008 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/08/08-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/08/08-S3.tex\"></a></p> "
},
{
 "tags": ["Hooke's law"],
 "question_id":2008310,
 "title": "08-S3-Q10",
 "body": "Modulus of elasticity, elastic energy, tension.  <p><img src=\"/database/db/08/08-S3-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2008 Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/08/08-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/08/08-S3.tex\"></a></p> "
},
{
 "tags": ["Circular motion"],
 "question_id":2008311,
 "title": "08-S3-Q11",
 "body": "Moment of inertia, angular velocity, couple.  <p><img src=\"/database/db/08/08-S3-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2008 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/08/08-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/08/08-S3.tex\"></a></p> "
},
{
 "tags": ["Laplace distribution"],
 "question_id":2008312,
 "title": "08-S3-Q12",
 "body": "Moment generating function, variance, curve sketching, frog, sum of random variables, normal distribution.  <p><img src=\"/database/db/08/08-S3-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2008 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/08/08-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/08/08-S3.tex\"></a></p> "
},
{
 "tags": ["Geometrical probability"],
 "question_id":2008313,
 "title": "08-S3-Q13",
 "body": "Box, strings, rings, expecttion, harmonic sum, variance.  <p><img src=\"/database/db/08/08-S3-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2008 Question 13 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/08/08-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/08/08-S3.tex\"></a></p> "
},
{
 "tags": ["Number theory"],
 "question_id":2009101,
 "title": "09-S1-Q1",
 "body": "Proper factor, integer, prime factors, C1.  <p><img src=\"/database/db/09/09-S1-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2009 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/09/09-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/09/09-S1.tex\"></a></p> "
},
{
 "tags": ["Cubic equations"],
 "question_id":2009102,
 "title": "09-S1-Q2",
 "body": "Curve, tangent, positive integers, C1.  <p><img src=\"/database/db/09/09-S1-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2009 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/09/09-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/09/09-S1.tex\"></a></p> "
},
{
 "tags": ["Quadratic equations"],
 "question_id":2009103,
 "title": "09-S1-Q3",
 "body": "Square and cube roots, distinct real solutions to equations, C1.  <p><img src=\"/database/db/09/09-S1-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2009 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/09/09-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/09/09-S1.tex\"></a></p> "
},
{
 "tags": ["Euclidean geometry"],
 "question_id":2009104,
 "title": "09-S1-Q4",
 "body": "Sides of triangles, cosine rule, ratio, C1.  <p><img src=\"/database/db/09/09-S1-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2009 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/09/09-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/09/09-S1.tex\"></a></p> "
},
{
 "tags": ["Optimisation"],
 "question_id":2009105,
 "title": "09-S1-Q5",
 "body": "Circular cone, differentiation, stationary value, C1.  <p><img src=\"/database/db/09/09-S1-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2009 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/09/09-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/09/09-S1.tex\"></a></p> "
},
{
 "tags": ["Integration by substitution"],
 "question_id":2009106,
 "title": "09-S1-Q6",
 "body": "Polynomial substitution.  <p><img src=\"/database/db/09/09-S1-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2009 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/09/09-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/09/09-S1.tex\"></a></p> "
},
{
 "tags": ["Integration by parts"],
 "question_id":2009107,
 "title": "09-S1-Q7",
 "body": "Trigonometric and exponential functions, sum to product formula.  <p><img src=\"/database/db/09/09-S1-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2009 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/09/09-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/09/09-S1.tex\"></a></p> "
},
{
 "tags": ["Euclidean geometry"],
 "question_id":2009108,
 "title": "09-S1-Q8",
 "body": "Equation of circle, angle, incircle, C1.  <p><img src=\"/database/db/09/09-S1-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2009 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/09/09-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/09/09-S1.tex\"></a></p> "
},
{
 "tags": ["Projectile motion"],
 "question_id":2009109,
 "title": "09-S1-Q9",
 "body": "Simultaneous projection, collision, trigonometry, range equation, inequality.  <p><img src=\"/database/db/09/09-S1-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2009 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/09/09-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/09/09-S1.tex\"></a></p> "
},
{
 "tags": ["Wedge"],
 "question_id":2009110,
 "title": "09-S1-Q10",
 "body": "Pulley, acceleration, maximisation.  <p><img src=\"/database/db/09/09-S1-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2009 Question 10 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/09/09-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/09/09-S1.tex\"></a></p> "
},
{
 "tags": ["Collision"],
 "question_id":2009111,
 "title": "09-S1-Q11",
 "body": "Coefficient of restitution, kinetic energy.  <p><img src=\"/database/db/09/09-S1-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2009 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/09/09-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/09/09-S1.tex\"></a></p> "
},
{
 "tags": ["Sampling without replacement"],
 "question_id":2009112,
 "title": "09-S1-Q12",
 "body": "Elementary probability, inequality, sweets from bag, C1.  <p><img src=\"/database/db/09/09-S1-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2009 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/09/09-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/09/09-S1.tex\"></a></p> "
},
{
 "tags": ["Combinatorics"],
 "question_id":2009113,
 "title": "09-S1-Q13",
 "body": "Ordering, expectation, boys and girls in line, C1.  <p><img src=\"/database/db/09/09-S1-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2009 Question 13 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/09/09-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/09/09-S1.tex\"></a></p> "
},{
 "tags": ["Coordinate geometry"],
 "question_id":2009201,
 "title": "09-S2-Q1",
 "body": "Curve sketching, lines of symmetry, intersection, area of quadrilateral, C1.  <p><img src=\"/database/db/09/09-S2-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2009 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/09/09-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/09/09-S2.tex\"></a></p> "
},
{
 "tags": ["Functions"],
 "question_id":2009202,
 "title": "09-S2-Q2",
 "body": "Curve sketching, trigonometry, exponential function, stationary points, differentiation, approximation, integration, area under curve.  <p><img src=\"/database/db/09/09-S2-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2009 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/09/09-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/09/09-S2.tex\"></a></p> "
},
{
 "tags": ["Trigonometry"],
 "question_id":2009203,
 "title": "09-S2-Q3",
 "body": "Identity proof, tan, surds.  <p><img src=\"/database/db/09/09-S2-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2009 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/09/09-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/09/09-S2.tex\"></a></p> "
},
{
 "tags": ["Polynomials"],
 "question_id":2009204,
 "title": "09-S2-Q4",
 "body": "Degree of polynomial, divisibility, C1.  <p><img src=\"/database/db/09/09-S2-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2009 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/09/09-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/09/09-S2.tex\"></a></p> "
},
{
 "tags": ["Integration"],
 "question_id":2009205,
 "title": "09-S2-Q5",
 "body": "Area under curve, surds.  <p><img src=\"/database/db/09/09-S2-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2009 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/09/09-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/09/09-S2.tex\"></a></p> "
},
{
 "tags": ["Fibonacci numbers"],
 "question_id":2009206,
 "title": "09-S2-Q6",
 "body": "Sum, inequality, sequences, C1.  <p><img src=\"/database/db/09/09-S2-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2009 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/09/09-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/09/09-S2.tex\"></a></p> "
},
{
 "tags": ["Integration"],
 "question_id":2009207,
 "title": "09-S2-Q7",
 "body": "Integration as inverse differentiation, polynomial, exponential, product rule.  <p><img src=\"/database/db/09/09-S2-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2009 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/09/09-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/09/09-S2.tex\"></a></p> "
},
{
 "tags": ["Vector geometry"],
 "question_id":2009208,
 "title": "09-S2-Q8",
 "body": "Equation of line, quadrilateral, position vector.  <p><img src=\"/database/db/09/09-S2-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2009 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/09/09-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/09/09-S2.tex\"></a></p> "
},
{
 "tags": ["Centre of mass"],
 "question_id":2009209,
 "title": "09-S2-Q9",
 "body": "Uniform lamina, trapezium, tank with liquid.  <p><img src=\"/database/db/09/09-S2-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2009 Question 9 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/09/09-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/09/09-S2.tex\"></a></p> "
},
{
 "tags": ["Collision"],
 "question_id":2009210,
 "title": "09-S2-Q10",
 "body": "Coefficient of restitution, equidistant particles.  <p><img src=\"/database/db/09/09-S2-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2009 Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/09/09-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/09/09-S2.tex\"></a></p> "
},
{
 "tags": ["Work and Power"],
 "question_id":2009211,
 "title": "09-S2-Q11",
 "body": "Train engine and trucks, inequality, approximation.  <p><img src=\"/database/db/09/09-S2-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2009 Question 11 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/09/09-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/09/09-S2.tex\"></a></p> "
},
{
 "tags": ["Continuous random variable"],
 "question_id":2009212,
 "title": "09-S2-Q12",
 "body": "Probability density function, pdf, curve sketching, expectation and variance, statistical tables, median.  <p><img src=\"/database/db/09/09-S2-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2009 Question 12 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/09/09-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/09/09-S2.tex\"></a></p> "
},
{
 "tags": ["Andover and Basingstoke Rockets"],
 "question_id":2009213,
 "title": "09-S2-Q13",
 "body": "Expectation.  <p><img src=\"/database/db/09/09-S2-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2009 Question 13 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/09/09-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/09/09-S2.tex\"></a></p> "
},
{
 "tags": ["Coordinate geometry"],
 "question_id":2009301,
 "title": "09-S3-Q1",
 "body": "Quadratic equation, circle, C1.  <p><img src=\"/database/db/09/09-S3-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2009 Question 1 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/09/09-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/09/09-S2.tex\"></a></p> "
},
{
 "tags": ["Series solutions"],
 "question_id":2009302,
 "title": "09-S3-Q2",
 "body": "Comparing coefficients, recurrence relations, differential equations, trigonometric functions.  <p><img src=\"/database/db/09/09-S3-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2009 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/09/09-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/09/09-S3.tex\"></a></p> "
},
{
 "tags": ["Functions"],
 "question_id":2009303,
 "title": "09-S3-Q3",
 "body": "Curve sketching, taylor series, limits, differentiation, even function.  <p><img src=\"/database/db/09/09-S3-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2009 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/09/09-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/09/09-S3.tex\"></a></p> "
},
{
 "tags": ["Laplace transform"],
 "question_id":2009304,
 "title": "09-S3-Q4",
 "body": "Integration, inverse Laplace transform.  <p><img src=\"/database/db/09/09-S3-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2009 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/09/09-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/09/09-S3.tex\"></a></p> "
},
{
 "tags": ["Simultaneous equations"],
 "question_id":2009305,
 "title": "09-S3-Q5",
 "body": "Symmetry, recurrence relations, C1.  <p><img src=\"/database/db/09/09-S3-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2009 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/09/09-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/09/09-S3.tex\"></a></p> "
},
{
 "tags": ["Complex numbers"],
 "question_id":2009306,
 "title": "09-S3-Q6",
 "body": "Modulus and argument, Euler's formula, trigonometry, geometry, cyclic quadrilaterals.  <p><img src=\"/database/db/09/09-S3-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2009 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/09/09-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/09/09-S3.tex\"></a></p> "
},
{
 "tags": ["Proof by induction"],
 "question_id":2009307,
 "title": "09-S3-Q7",
 "body": "Reurrence relations, differential equation, degrees of polynomial.  <p><img src=\"/database/db/09/09-S3-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2009 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/09/09-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/09/09-S3.tex\"></a></p> "
},
{
 "tags": ["Infinite series"],
 "question_id":2009308,
 "title": "09-S3-Q8",
 "body": "Limits, exponential functions, recurrence formula of integrals.  <p><img src=\"/database/db/09/09-S3-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2009 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/09/09-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/09/09-S3.tex\"></a></p> "
},
{
 "tags": ["Projectile motion"],
 "question_id":2009309,
 "title": "09-S3-Q9",
 "body": "Second trajectory, trigonometry.  <p><img src=\"/database/db/09/09-S3-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2009 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/09/09-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/09/09-S3.tex\"></a></p> "
},
{
 "tags": ["SHM"],
 "question_id":2009310,
 "title": "09-S3-Q10",
 "body": "Simple harmonic motion, second order differential equation, springs, Hooke's law.  <p><img src=\"/database/db/09/09-S3-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2009 Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/09/09-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/09/09-S3.tex\"></a></p> "
},
{
 "tags": ["Differential equation"],
 "question_id":2009311,
 "title": "09-S3-Q11",
 "body": "Newton's second law, gravitational force, variable mass.  <p><img src=\"/database/db/09/09-S3-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2009 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/09/09-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/09/09-S3.tex\"></a></p> "
},
{
 "tags": ["Coin toss"],
 "question_id":2009312,
 "title": "09-S3-Q12",
 "body": "Conditional expectation, sum of random variables, probability generating function, pgf, expectation and variance.  <p><img src=\"/database/db/09/09-S3-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2009 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/09/09-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/09/09-S3.tex\"></a></p> "
},
{
 "tags": ["Geometrical probability"],
 "question_id":2009313,
 "title": "09-S3-Q13",
 "body": "Independence, correlation, point on the circumference of a circle, uniform distribution.  <p><img src=\"/database/db/09/09-S3-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2009 Question 13 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/09/09-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/09/09-S3.tex\"></a></p> "
},
{
 "tags": ["Simultaneous equations"],
 "question_id":10101,
 "title": "10-S1-Q1",
 "body": "Factorisation of quadratic polynomials, C1.  <p><img src=\"/database/db/10/10-S1-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2010 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/10/10-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/10/10-S1.tex\"></a></p> "
},
{
 "tags": ["Curve sketching"],
 "question_id":10102,
 "title": "10-S1-Q2",
 "body": "Differentiation, stationary points, vertical asymptote, exponential function  <p><img src=\"/database/db/10/10-S1-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2010 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/10/10-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/10/10-S1.tex\"></a></p> "
},
{
 "tags": ["Trigonometry"],
 "question_id":10103,
 "title": "10-S1-Q3",
 "body": "Sum to product formulae, sine, cosine, coordinate geometry, parallel lines.  <p><img src=\"/database/db/10/10-S1-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2010 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/10/10-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/10/10-S1.tex\"></a></p> "
},
{
 "tags": ["Integration by substitution"],
 "question_id":10104,
 "title": "10-S1-Q4",
 "body": "Logarithmic and square root function, Volume of revolution.  <p><img src=\"/database/db/10/10-S1-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2010 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/10/10-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/10/10-S1.tex\"></a></p> "
},
{
 "tags": ["Binomial coefficients"],
 "question_id":10105,
 "title": "10-S1-Q5",
 "body": "Sum of binomial coefficients, differentiation.  <p><img src=\"/database/db/10/10-S1-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2010 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/10/10-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/10/10-S1.tex\"></a></p> "
},
{
 "tags": ["Differential equations"],
 "question_id":10106,
 "title": "10-S1-Q6",
 "body": "Eigenfunction substitution, exponential function, linearity.  <p><img src=\"/database/db/10/10-S1-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2010 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/10/10-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/10/10-S1.tex\"></a></p> "
},
{
 "tags": ["Vector geometry"],
 "question_id":10107,
 "title": "10-S1-Q7",
 "body": "Position vector, equation of lines, intersection.  <p><img src=\"/database/db/10/10-S1-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2010 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/10/10-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/10/10-S1.tex\"></a></p> "
},
{
 "tags": ["Number theory"],
 "question_id":10108,
 "title": "10-S1-Q8",
 "body": "Divisibility, integer solution to equations, C1.  <p><img src=\"/database/db/10/10-S1-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2010 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/10/10-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/10/10-S1.tex\"></a></p> "
},
{
 "tags": ["Friction"],
 "question_id":10109,
 "title": "10-S1-Q9",
 "body": "Uniform rectangular lamina, centre of mass, coefficient of friction, trigonometry.  <p><img src=\"/database/db/10/10-S1-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2010 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/10/10-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/10/10-S1.tex\"></a></p> "
},
{
 "tags": ["Time-displacement"],
 "question_id":10110,
 "title": "10-S1-Q10",
 "body": "Exponential and trigonometric functions, velocity of particles, acceleration.  <p><img src=\"/database/db/10/10-S1-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2010 Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/10/10-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/10/10-S1.tex\"></a></p> "
},
{
 "tags": ["Collision"],
 "question_id":10111,
 "title": "10-S1-Q11",
 "body": "Coefficient of restitution, changing direction.  <p><img src=\"/database/db/10/10-S1-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2010 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/10/10-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/10/10-S1.tex\"></a></p> "
},
{
 "tags": ["Discrete random variables"],
 "question_id":10112,
 "title": "10-S1-Q12",
 "body": "Expectation algebra, toy penguins from cereal boxes.  <p><img src=\"/database/db/10/10-S1-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2010 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/10/10-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/10/10-S1.tex\"></a></p> "
},
{
 "tags": ["Poisson distribution"],
 "question_id":10113,
 "title": "10-S1-Q13",
 "body": "Receiving texts, sum of random variables. <p><img src=\"/database/db/10/10-S1-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2010 Question 13 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/10/10-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/10/10-S1.tex\"></a></p> "
},
{
 "tags": ["Osculating circle"],
 "question_id":10201,
 "title": "10-S2-Q1",
 "body": "Coordinate geometry, differentiation, rate of change, gradient, equation of tangent.  <p><img src=\"/database/db/10/10-S2-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2010 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/10/10-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/10/10-S2.tex\"></a></p> "
},
{
 "tags": ["Integration"],
 "question_id":10202,
 "title": "10-S2-Q2",
 "body": "Trigonometric identities, useless Eustace.  <p><img src=\"/database/db/10/10-S2-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2010 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/10/10-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/10/10-S2.tex\"></a></p> "
},
{
 "tags": ["Fibonacci numbers"],
 "question_id":10203,
 "title": "10-S2-Q3",
 "body": "Recurrence relation, general solution, sum.  <p><img src=\"/database/db/10/10-S2-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2010 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/10/10-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/10/10-S2.tex\"></a></p> "
},
{
 "tags": ["Integration by substitution"],
 "question_id":10204,
 "title": "10-S2-Q4",
 "body": "Logarithmic and trigonometric functions.  <p><img src=\"/database/db/10/10-S2-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2010 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/10/10-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/10/10-S2.tex\"></a></p> "
},
{
 "tags": ["Vector geometry"],
 "question_id":10205,
 "title": "10-S2-Q5",
 "body": "Position vectors, inclined plane, angle bisector.  <p><img src=\"/database/db/10/10-S2-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2010 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/10/10-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/10/10-S2.tex\"></a></p> "
},
{
 "tags": ["Elementary geometry"],
 "question_id":10206,
 "title": "10-S2-Q6",
 "body": "Tetrahedron, edge, cosine, inscribed sphere, C1.  <p><img src=\"/database/db/10/10-S2-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2010 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/10/10-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/10/10-S2.tex\"></a></p> "
},
{
 "tags": ["Quadratic equation"],
 "question_id":10207,
 "title": "10-S2-Q7",
 "body": "Turning points, cubic equations, relation between roots, C1.  <p><img src=\"/database/db/10/10-S2-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2010 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/10/10-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/10/10-S2.tex\"></a></p> "
},
{
 "tags": ["Integration"],
 "question_id":10208,
 "title": "10-S2-Q8",
 "body": "Curve sketching, trigonometry, exponential function, area under curve, sum.  <p><img src=\"/database/db/10/10-S2-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2010 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/10/10-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/10/10-S2.tex\"></a></p> "
},
{
 "tags": ["Projectile motion"],
 "question_id":10209,
 "title": "10-S2-Q9",
 "body": "Simultaneous projection, inequalities, maximum height, collision.  <p><img src=\"/database/db/10/10-S2-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2010 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/10/10-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/10/10-S2.tex\"></a></p> "
},
{
 "tags": ["Collision"],
 "question_id":10210,
 "title": "10-S2-Q10",
 "body": "Coefficient of restitution, perfectly elastic, approximation.  <p><img src=\"/database/db/10/10-S2-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2010 Question 10 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/10/10-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/10/10-S2.tex\"></a></p> "
},
{
 "tags": ["Equilibrium"],
 "question_id":10211,
 "title": "10-S2-Q11",
 "body": "Inclined at angle, ladder, trigonometry.  <p><img src=\"/database/db/10/10-S2-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2010 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/10/10-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/10/10-S2.tex\"></a></p> "
},
{
 "tags": ["Continuous random variable"],
 "question_id":10212,
 "title": "10-S2-Q12",
 "body": "Expectation, median, inequality.  <p><img src=\"/database/db/10/10-S2-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2010 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/10/10-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/10/10-S2.tex\"></a></p> "
},
{
 "tags": ["Elementary probability"],
 "question_id":10213,
 "title": "10-S2-Q13",
 "body": "Stepney Chess club, strategies, C1.  <p><img src=\"/database/db/10/10-S2-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2010 Question 13 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/10/10-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/10/10-S2.tex\"></a></p> "
},
{
 "tags": ["Sum"],
 "question_id":10301,
 "title": "10-S3-Q1",
 "body": "Sum of squares, algebraic manipulation, inequalities.  <p><img src=\"/database/db/10/10-S3-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2010 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/10/10-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/10/10-S3.tex\"></a></p> "
},
{
 "tags": ["Integration"],
 "question_id":10302,
 "title": "10-S3-Q2",
 "body": "Hyperbolic functions, substitution.  <p><img src=\"/database/db/10/10-S3-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2010 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/10/10-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/10/10-S3.tex\"></a></p> "
},
{
 "tags": ["Complex numbers"],
 "question_id":10303,
 "title": "10-S3-Q3",
 "body": "Roots of unity, primitive, polynomials, factorisation, prime.  <p><img src=\"/database/db/10/10-S3-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2010 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/10/10-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/10/10-S3.tex\"></a></p> "
},
{
 "tags": ["Quadratic equations"],
 "question_id":10304,
 "title": "10-S3-Q4",
 "body": "Roots of quadratic equations, common root, proof, cubic, C1.  <p><img src=\"/database/db/10/10-S3-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2010 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/10/10-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/10/10-S3.tex\"></a></p> "
},
{
 "tags": ["Coordinate geometry"],
 "question_id":10305,
 "title": "10-S3-Q5",
 "body": "Line produced, construction using straight-edge, square, C1.  <p><img src=\"/database/db/10/10-S3-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2010 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/10/10-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/10/10-S3.tex\"></a></p> "
},
{
 "tags": ["Coordinate geometry"],
 "question_id":10306,
 "title": "10-S3-Q6",
 "body": "Sphere, rotation, trigonometry, vector.  <p><img src=\"/database/db/10/10-S3-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2010 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/10/10-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/10/10-S3.tex\"></a></p> "
},
{
 "tags": ["Maclaurin series"],
 "question_id":10307,
 "title": "10-S3-Q7",
 "body": "Proof by induction, Chebyshev polynomial, differential equation, polynomial, degree.  <p><img src=\"/database/db/10/10-S3-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2010 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/10/10-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/10/10-S3.tex\"></a></p> "
},
{
 "tags": ["Integrating factors"],
 "question_id":10308,
 "title": "10-S3-Q8",
 "body": "Differential equation, general solution.  <p><img src=\"/database/db/10/10-S3-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2010 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/10/10-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/10/10-S3.tex\"></a></p> "
},
{
 "tags": ["Equilibrium"],
 "question_id":10309,
 "title": "10-S3-Q9",
 "body": "String, normal reaction, inequality.  <p><img src=\"/database/db/10/10-S3-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2010 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/10/10-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/10/10-S3.tex\"></a></p> "
},
{
 "tags": ["SHM"],
 "question_id":10310,
 "title": "10-S3-Q10",
 "body": "Period of simple harmonic motion, modulus of elasticity, equation of motion.  <p><img src=\"/database/db/10/10-S3-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2010 Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/10/10-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/10/10-S3.tex\"></a></p> "
},
{
 "tags": ["Friction force"],
 "question_id":10311,
 "title": "10-S3-Q11",
 "body": "Acceleration, bullet, distance.  <p><img src=\"/database/db/10/10-S3-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2010 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/10/10-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/10/10-S3.tex\"></a></p> "
},
{
 "tags": ["Expectation"],
 "question_id":10312,
 "title": "10-S3-Q12",
 "body": "Infinite series, target.  <p><img src=\"/database/db/10/10-S3-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2010 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/10/10-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/10/10-S3.tex\"></a></p> "
},
{
 "tags": ["Corr"],
 "question_id":10313,
 "title": "10-S3-Q13",
 "body": "Product moment correlation coefficient, independent random variables, variance, expectation.  <p><img src=\"/database/db/10/10-S3-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2010 Question 13 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/10/10-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/10/10-S3.tex\"></a></p> "
},
{
 "tags": ["Differentiation"],
 "question_id":11101,
 "title": "11-S1-Q1",
 "body": "Normal, gradient, lines and curve, C1.  <p><img src=\"/database/db/11/11-S1-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2011 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/11/11-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/11/11-S1.tex\"></a></p> "
},
{
 "tags": ["Integrals"],
 "question_id":11102,
 "title": "11-S1-Q2",
 "body": "Integration by parts  <p><img src=\"/database/db/11/11-S1-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2011 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/11/11-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/11/11-S1.tex\"></a></p> "
},
{
 "tags": ["Trigonometry"],
 "question_id":11103,
 "title": "11-S1-Q3",
 "body": "Differentiation, identity.  <p><img src=\"/database/db/11/11-S1-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2011 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/11/11-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/11/11-S1.tex\"></a></p> "
},
{
 "tags": ["Coordinate geometry"],
 "question_id":11104,
 "title": "11-S1-Q4",
 "body": "Parabola, tangents, bisection, C1.  <p><img src=\"/database/db/11/11-S1-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2011 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/11/11-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/11/11-S1.tex\"></a></p> "
},
{
 "tags": ["Analysis"],
 "question_id":11105,
 "title": "11-S1-Q5",
 "body": "Curve sketching, trigonometry, integration, modulus function, differentiation, stationary, minimum, optimisation.  <p><img src=\"/database/db/11/11-S1-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2011 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/11/11-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/11/11-S1.tex\"></a></p> "
},
{
 "tags": ["Binomial expansion"],
 "question_id":11106,
 "title": "11-S1-Q6",
 "body": "Binomial series, coefficient, infinite sum.  <p><img src=\"/database/db/11/11-S1-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2011 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/11/11-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/11/11-S1.tex\"></a></p> "
},
{
 "tags": ["Fluid dynamics"],
 "question_id":11107,
 "title": "11-S1-Q7",
 "body": "Differential equation, water leaking out of tank, logarithm function.  <p><img src=\"/database/db/11/11-S1-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2011 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/11/11-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/11/11-S1.tex\"></a></p> "
},
{
 "tags": ["Number theory"],
 "question_id":11108,
 "title": "11-S1-Q8",
 "body": "Cubes and squares, inequality, integer solution to equations, C1.  <p><img src=\"/database/db/11/11-S1-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2011 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/11/11-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/11/11-S1.tex\"></a></p> "
},
{
 "tags": ["Projectile motion"],
 "question_id":11109,
 "title": "11-S1-Q9",
 "body": "Collision, perfectly elastic.  <p><img src=\"/database/db/11/11-S1-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2011 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/11/11-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/11/11-S1.tex\"></a></p> "
},
{
 "tags": ["Collision"],
 "question_id":11110,
 "title": "11-S1-Q10",
 "body": "Perfect elastic, particles dropped from height, horizontal plane.  <p><img src=\"/database/db/11/11-S1-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2011 Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/11/11-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/11/11-S1.tex\"></a></p> "
},
{
 "tags": ["Equilibrium"],
 "question_id":11111,
 "title": "11-S1-Q11",
 "body": "Trigonometry, pulley.  <p><img src=\"/database/db/11/11-S1-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2011 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/11/11-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/11/11-S1.tex\"></a></p> "
},
{
 "tags": ["Raffle tickets"],
 "question_id":11112,
 "title": "11-S1-Q12",
 "body": "Lottery, expectation, combinatorics, C1.  <p><img src=\"/database/db/11/11-S1-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2011 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/11/11-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/11/11-S1.tex\"></a></p> "
},
{
 "tags": ["Continuous random variable"],
 "question_id":11113,
 "title": "11-S1-Q13",
 "body": "Integration. <p><img src=\"/database/db/11/11-S1-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2011 Question 13 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/11/11-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/11/11-S1.tex\"></a></p> "
},
{
 "tags": ["Square roots"],
 "question_id":11201,
 "title": "11-S2-Q1",
 "body": "Curve sketching, graphical solution to equations, C1.  <p><img src=\"/database/db/11/11-S2-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2011 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/11/11-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/11/11-S2.tex\"></a></p> "
},
{
 "tags": ["Number theory"],
 "question_id":11202,
 "title": "11-S2-Q2",
 "body": "Perfect squres, cubes, solution to equations, C1.  <p><img src=\"/database/db/11/11-S2-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2011 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/11/11-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/11/11-S2.tex\"></a></p> "
},
{
 "tags": ["Functions"],
 "question_id":11203,
 "title": "11-S2-Q3",
 "body": "Trigonometry, differentiation, increasing, proof.  <p><img src=\"/database/db/11/11-S2-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2011 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/11/11-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/11/11-S2.tex\"></a></p> "
},
{
 "tags": ["Trigonometry"],
 "question_id":11204,
 "title": "11-S2-Q4",
 "body": "Identities, general solution, rational numbers.  <p><img src=\"/database/db/11/11-S2-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2011 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/11/11-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/11/11-S2.tex\"></a></p> "
},
{
 "tags": ["Vector geometry"],
 "question_id":11205,
 "title": "11-S2-Q5",
 "body": "Reflection line, position vector.  <p><img src=\"/database/db/11/11-S2-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2011 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/11/11-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/11/11-S2.tex\"></a></p> "
},
{
 "tags": ["Integration"],
 "question_id":11206,
 "title": "11-S2-Q6",
 "body": "Parts, trigonometry.  <p><img src=\"/database/db/11/11-S2-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2011 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/11/11-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/11/11-S2.tex\"></a></p> "
},
{
 "tags": ["Recurrence relations"],
 "question_id":11207,
 "title": "11-S2-Q7",
 "body": "Summation.  <p><img src=\"/database/db/11/11-S2-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2011 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/11/11-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/11/11-S2.tex\"></a></p> "
},
{
 "tags": ["Parametric equation"],
 "question_id":11208,
 "title": "11-S2-Q8",
 "body": "Curve sketching, area integral, integration, maximum value.  <p><img src=\"/database/db/11/11-S2-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2011 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/11/11-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/11/11-S2.tex\"></a></p> "
},
{
 "tags": ["Collision"],
 "question_id":11209,
 "title": "11-S2-Q9",
 "body": "Coefficient of restitution, second collision.  <p><img src=\"/database/db/11/11-S2-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2011 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/11/11-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/11/11-S2.tex\"></a></p> "
},
{
 "tags": ["Projectile motion"],
 "question_id":11210,
 "title": "11-S2-Q10",
 "body": "Horizontal projectile, time, tan equation.  <p><img src=\"/database/db/11/11-S2-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2011 Question 10 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/11/11-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/11/11-S2.tex\"></a></p> "
},
{
 "tags": ["Vector geometry"],
 "question_id":11211,
 "title": "11-S2-Q11",
 "body": "Equilibrium, resolve forces, trigonometry, vectors.  <p><img src=\"/database/db/11/11-S2-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2011 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/11/11-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/11/11-S2.tex\"></a></p> "
},
{
 "tags": ["Elementary probability"],
 "question_id":11212,
 "title": "11-S2-Q12",
 "body": "Expectation.  <p><img src=\"/database/db/11/11-S2-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2011 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/11/11-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/11/11-S2.tex\"></a></p> "
},
{
 "tags": ["Skewness"],
 "question_id":11213,
 "title": "11-S2-Q13",
 "body": "Statistics, measure of skewness, decile and Pearson skewness, cdf (cumulative distribution function), continuous random variable.  <p><img src=\"/database/db/11/11-S2-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2011 Question 13 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/11/11-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/11/11-S2.tex\"></a></p> "
},
{
 "tags": ["Differential equation"],
 "question_id":11301,
 "title": "11-S3-Q1",
 "body": "Substitution, general solution.  <p><img src=\"/database/db/11/11-S3-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2011 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/11/11-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/11/11-S3.tex\"></a></p> "
},
{
 "tags": ["Number theory"],
 "question_id":11302,
 "title": "11-S3-Q2",
 "body": "Polynomial, common factor, irrational, nth root, cubic equations.  <p><img src=\"/database/db/11/11-S3-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2011 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/11/11-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/11/11-S3.tex\"></a></p> "
},
{
 "tags": ["Factorisation"],
 "question_id":11303,
 "title": "11-S3-Q3",
 "body": "Cubic and quadratic poynomial, roots, complex numbers.  <p><img src=\"/database/db/11/11-S3-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2011 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/11/11-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/11/11-S3.tex\"></a></p> "
},
{
 "tags": ["Inequalities"],
 "question_id":11304,
 "title": "11-S3-Q4",
 "body": "Theorem, curve sketching, Young's inequality, graphical solution, functions, trigonometric functions.  <p><img src=\"/database/db/11/11-S3-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2011 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/11/11-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/11/11-S3.tex\"></a></p> "
},
{
 "tags": ["Integration"],
 "question_id":11305,
 "title": "11-S3-Q5",
 "body": "Area integral, parametric equation, coordinate geometry.  <p><img src=\"/database/db/11/11-S3-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2011 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/11/11-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/11/11-S3.tex\"></a></p> "
},
{
 "tags": ["Integrals"],
 "question_id":11306,
 "title": "11-S3-Q6",
 "body": "Integration by substitution, hyperbolic and logarithmic functions.  <p><img src=\"/database/db/11/11-S3-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2011 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/11/11-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/11/11-S3.tex\"></a></p> "
},
{
 "tags": ["Proof by induction"],
 "question_id":11307,
 "title": "11-S3-Q7",
 "body": "Square root, general forms.  <p><img src=\"/database/db/11/11-S3-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2011 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/11/11-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/11/11-S3.tex\"></a></p> "
},
{
 "tags": ["Mobius map"],
 "question_id":11308,
 "title": "11-S3-Q8",
 "body": "Complex numbers, locus, circle, line segment, real and imaginary parts.  <p><img src=\"/database/db/11/11-S3-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2011 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/11/11-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/11/11-S3.tex\"></a></p> "
},
{
 "tags": ["Equilibrium"],
 "question_id":11309,
 "title": "11-S3-Q9",
 "body": "First order differential equation, contact, cylinder.  <p><img src=\"/database/db/11/11-S3-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2011 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/11/11-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/11/11-S3.tex\"></a></p> "
},
{
 "tags": ["Collision"],
 "question_id":11310,
 "title": "11-S3-Q10",
 "body": "Hooke's law, impulse.  <p><img src=\"/database/db/11/11-S3-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2011 Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/11/11-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/11/11-S3.tex\"></a></p> "
},
{
 "tags": ["Circular motion"],
 "question_id":11311,
 "title": "11-S3-Q11",
 "body": "String, couple, angular speed of simple harmonic motion (SHM).  <p><img src=\"/database/db/11/11-S3-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2011 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/11/11-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/11/11-S3.tex\"></a></p> "
},
{
 "tags": ["Pgf"],
 "question_id":11312,
 "title": "11-S3-Q12",
 "body": "Probability generating function, sum of independent random variables, expectation and variance algebra, coin toss.  <p><img src=\"/database/db/11/11-S3-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2011 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/11/11-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/11/11-S3.tex\"></a></p> "
},
{
 "tags": ["Integer part"],
 "question_id":11313,
 "title": "11-S3-Q13",
 "body": "Sampling with replacement, combinatorics, probability, floor function, C1.  <p><img src=\"/database/db/11/11-S3-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2011 Question 13 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/11/11-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/11/11-S3.tex\"></a></p> "
},
{
 "tags": ["Coordinate geometry"],
 "question_id":12101,
 "title": "12-S1-Q1",
 "body": "Equation of lines, intersection, sum of distance, minimisation, differentiation, C1.  <p><img src=\"/database/db/12/12-S1-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2012 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/12/12-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/12/12-S1.tex\"></a></p> "
},
{
 "tags": ["Curve sketching"],
 "question_id":12102,
 "title": "12-S1-Q2",
 "body": "Quartic equations, roots, differentiation, stationary points, C1  <p><img src=\"/database/db/12/12-S1-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2012 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/12/12-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/12/12-S1.tex\"></a></p> "
},
{
 "tags": ["Inequality"],
 "question_id":12103,
 "title": "12-S1-Q3",
 "body": "Integration, curve sketching, tangent, exponential function.  <p><img src=\"/database/db/12/12-S1-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2012 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/12/12-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/12/12-S1.tex\"></a></p> "
},
{
 "tags": ["Coordinate geometry"],
 "question_id":12104,
 "title": "12-S1-Q4",
 "body": "Hyperbola, tangent, intersection, distances, C1.  <p><img src=\"/database/db/12/12-S1-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2012 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/12/12-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/12/12-S1.tex\"></a></p> "
},
{
 "tags": ["Integration"],
 "question_id":12105,
 "title": "12-S1-Q5",
 "body": "Trigonometric and logarithmic functions, parts, substitution.  <p><img src=\"/database/db/12/12-S1-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2012 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/12/12-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/12/12-S1.tex\"></a></p> "
},
{
 "tags": ["Euclidean geometry"],
 "question_id":12106,
 "title": "12-S1-Q6",
 "body": "Trigonometry, inequality.  <p><img src=\"/database/db/12/12-S1-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2012 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/12/12-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/12/12-S1.tex\"></a></p> "
},
{
 "tags": ["Sequences"],
 "question_id":12107,
 "title": "12-S1-Q7",
 "body": "Recurrence relations, factorisation, cubics.  <p><img src=\"/database/db/12/12-S1-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2012 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/12/12-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/12/12-S1.tex\"></a></p> "
},
{
 "tags": ["Differential equation"],
 "question_id":12108,
 "title": "12-S1-Q8",
 "body": "Substitution, general solution.  <p><img src=\"/database/db/12/12-S1-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2012 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/12/12-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/12/12-S1.tex\"></a></p> "
},
{
 "tags": ["Projectile motion"],
 "question_id":12109,
 "title": "12-S1-Q9",
 "body": "Shot putter, distance equation, trigonometry.  <p><img src=\"/database/db/12/12-S1-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2012 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/12/12-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/12/12-S1.tex\"></a></p> "
},
{
 "tags": ["Time-distance"],
 "question_id":12110,
 "title": "12-S1-Q10",
 "body": "Stone dropped from well, time.  <p><img src=\"/database/db/12/12-S1-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2012 Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/12/12-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/12/12-S1.tex\"></a></p> "
},
{
 "tags": ["Pulley"],
 "question_id":12111,
 "title": "12-S1-Q11",
 "body": "Coefficient of friction, equilibrium, acceleration.  <p><img src=\"/database/db/12/12-S1-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2012 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/12/12-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/12/12-S1.tex\"></a></p> "
},
{
 "tags": ["Pdf"],
 "question_id":12112,
 "title": "12-S1-Q12",
 "body": "Fire extinguishers, continuous probability density function.  <p><img src=\"/database/db/12/12-S1-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2012 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/12/12-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/12/12-S1.tex\"></a></p> "
},
{
 "tags": ["Random integer"],
 "question_id":12113,
 "title": "12-S1-Q13",
 "body": "Combinatorics, digits, expectation. <p><img src=\"/database/db/12/12-S1-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2012 Question 13 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/12/12-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/12/12-S1.tex\"></a></p> "
},
{
 "tags": ["Binomial expansion"],
 "question_id":12201,
 "title": "12-S2-Q1",
 "body": "Coefficients.  <p><img src=\"/database/db/12/12-S2-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2012 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/12/12-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/12/12-S2.tex\"></a></p> "
},
{
 "tags": ["Polynomials"],
 "question_id":12202,
 "title": "12-S2-Q2",
 "body": "Degree of polynomials, C1.  <p><img src=\"/database/db/12/12-S2-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2012 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/12/12-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/12/12-S2.tex\"></a></p> "
},
{
 "tags": ["Integration by substitution"],
 "question_id":12203,
 "title": "12-S2-Q3",
 "body": "Tan substitution.  <p><img src=\"/database/db/12/12-S2-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2012 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/12/12-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/12/12-S2.tex\"></a></p> "
},
{
 "tags": ["Analysis"],
 "question_id":12204,
 "title": "12-S2-Q4",
 "body": "Logarithm function, infinite series, inequalities, exponential function, limits.  <p><img src=\"/database/db/12/12-S2-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2012 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/12/12-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/12/12-S2.tex\"></a></p> "
},
{
 "tags": ["Curve sketching"],
 "question_id":12205,
 "title": "12-S2-Q5",
 "body": "Differentiation, stationary points, C1.  <p><img src=\"/database/db/12/12-S2-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2012 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/12/12-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/12/12-S2.tex\"></a></p> "
},
{
 "tags": ["Euclidean geometry"],
 "question_id":12206,
 "title": "12-S2-Q6",
 "body": "Cyclic quadrilateral, area of triangle, sides, Heron, C1.  <p><img src=\"/database/db/12/12-S2-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2012 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/12/12-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/12/12-S2.tex\"></a></p> "
},
{
 "tags": ["Vector geometry"],
 "question_id":12207,
 "title": "12-S2-Q7",
 "body": "Position vectors, centroid, equation of plane and line.  <p><img src=\"/database/db/12/12-S2-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2012 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/12/12-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/12/12-S2.tex\"></a></p> "
},
{
 "tags": ["Difference equaetions"],
 "question_id":12208,
 "title": "12-S2-Q8",
 "body": "Recurrence relations, sequences, proof, strictly increasing.  <p><img src=\"/database/db/12/12-S2-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2012 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/12/12-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/12/12-S2.tex\"></a></p> "
},
{
 "tags": ["Projectile motion"],
 "question_id":12209,
 "title": "12-S2-Q9",
 "body": "Tennis ball, inequality, over net, distance, trigonometry.  <p><img src=\"/database/db/12/12-S2-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2012 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/12/12-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/12/12-S2.tex\"></a></p> "
},
{
 "tags": ["Friction"],
 "question_id":12210,
 "title": "12-S2-Q10",
 "body": "Equilibrium, cylinder.  <p><img src=\"/database/db/12/12-S2-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2012 Question 10 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/12/12-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/12/12-S2.tex\"></a></p> "
},
{
 "tags": ["Collision"],
 "question_id":12211,
 "title": "12-S2-Q11",
 "body": "Kinetic energy lost, particles embedded in block.  <p><img src=\"/database/db/12/12-S2-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2012 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/12/12-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/12/12-S2.tex\"></a></p> "
},
{
 "tags": ["Elementary probability"],
 "question_id":12212,
 "title": "12-S2-Q12",
 "body": "Tree diagram, conditional probability, C1.  <p><img src=\"/database/db/12/12-S2-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2012 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/12/12-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/12/12-S2.tex\"></a></p> "
},
{
 "tags": ["Geometric probability"],
 "question_id":12213,
 "title": "12-S2-Q13",
 "body": "Poisson random variable, supermarkets, expectation and variance, integration, pdf.  <p><img src=\"/database/db/12/12-S2-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2012 Question 13 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/12/12-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/12/12-S2.tex\"></a></p> "
},
{
 "tags": ["Differential equation"],
 "question_id":12301,
 "title": "12-S3-Q1",
 "body": "Substitution, general solution, forced first order equation.  <p><img src=\"/database/db/12/12-S3-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2012 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/12/12-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/12/12-S3.tex\"></a></p> "
},
{
 "tags": ["Infinite series"],
 "question_id":12302,
 "title": "12-S3-Q2",
 "body": "Expansions of logarithmic, rational functions.  <p><img src=\"/database/db/12/12-S3-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2012 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/12/12-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/12/12-S3.tex\"></a></p> "
},
{
 "tags": ["Curve sketching"],
 "question_id":12303,
 "title": "12-S3-Q3",
 "body": "Quadratic and quartic equations, intersection, C1.  <p><img src=\"/database/db/12/12-S3-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2012 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/12/12-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/12/12-S3.tex\"></a></p> "
},
{
 "tags": ["Sum"],
 "question_id":12304,
 "title": "12-S3-Q4",
 "body": "Differentiation, summation sign manipulation, infinite series, logarithms.  <p><img src=\"/database/db/12/12-S3-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2012 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/12/12-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/12/12-S3.tex\"></a></p> "
},
{
 "tags": ["Ratinoal points"],
 "question_id":12305,
 "title": "12-S3-Q5",
 "body": "Integer rational points, circle, number theory, hyperbola, C1.  <p><img src=\"/database/db/12/12-S3-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2012 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/12/12-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/12/12-S3.tex\"></a></p> "
},
{
 "tags": ["Complex number"],
 "question_id":12306,
 "title": "12-S3-Q6",
 "body": "Quadtratic equation, parametesr, root locus, Argand diagram.  <p><img src=\"/database/db/12/12-S3-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2012 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/12/12-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/12/12-S3.tex\"></a></p> "
},
{
 "tags": ["Differential equation"],
 "question_id":12307,
 "title": "12-S3-Q7",
 "body": "Pain-killing drug modelling, brain, system of first order equations.  <p><img src=\"/database/db/12/12-S3-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2012 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/12/12-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/12/12-S3.tex\"></a></p> "
},
{
 "tags": ["Fibonacci sequence"],
 "question_id":12308,
 "title": "12-S3-Q8",
 "body": "Arctan identity, infinite sum, proof by induction.  <p><img src=\"/database/db/12/12-S3-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2012 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/12/12-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/12/12-S3.tex\"></a></p> "
},
{
 "tags": ["Pulley"],
 "question_id":12309,
 "title": "12-S3-Q9",
 "body": "FMoment of inertia, rotation, axle.  <p><img src=\"/database/db/12/12-S3-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2012 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/12/12-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/12/12-S3.tex\"></a></p> "
},
{
 "tags": ["Circular motion"],
 "question_id":12310,
 "title": "12-S3-Q10",
 "body": "Ring and hoop, equilibrium, reaction force.  <p><img src=\"/database/db/12/12-S3-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2012 Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/12/12-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/12/12-S3.tex\"></a></p> "
},
{
 "tags": ["Acceleration"],
 "question_id":12311,
 "title": "12-S3-Q11",
 "body": "Rope, energy conservation.  <p><img src=\"/database/db/12/12-S3-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 20121 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/12/12-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/12/12-S3.tex\"></a></p> "
},
{
 "tags": ["Geometric probability"],
 "question_id":12312,
 "title": "12-S3-Q12",
 "body": "Area of triangle, perpendicular distance, minimum, pdf, expectation, tetrahedron, distance from point to closest face.  <p><img src=\"/database/db/12/12-S3-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2012 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/12/12-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/12/12-S3.tex\"></a></p> "
},
{
 "tags": ["Normal distribution"],
 "question_id":12313,
 "title": "12-S3-Q13",
 "body": "Cdf, conditional expectation.  <p><img src=\"/database/db/12/12-S3-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2012 Question 13 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/12/12-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/12/12-S3.tex\"></a></p> "
},
{
 "tags": ["Square roots"],
 "question_id":13101,
 "title": "13-S1-Q1",
 "body": "Substitution, root of equation, C1.  <p><img src=\"/database/db/13/13-S1-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2013 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/13/13-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/13/13-S1.tex\"></a></p> "
},
{
 "tags": ["Integer part"],
 "question_id":13102,
 "title": "13-S1-Q2",
 "body": "Floor function, curve sketching, roots of equation, inequalities, C1  <p><img src=\"/database/db/13/13-S1-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2013 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/13/13-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/13/13-S1.tex\"></a></p> "
},
{
 "tags": ["Vectors"],
 "question_id":13103,
 "title": "13-S1-Q3",
 "body": "Position vectors, associativity, ratio, line segment.  <p><img src=\"/database/db/13/13-S1-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2013 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/13/13-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/13/13-S1.tex\"></a></p> "
},
{
 "tags": ["Integration by substitution"],
 "question_id":13104,
 "title": "13-S1-Q4",
 "body": "Trigonometry.  <p><img src=\"/database/db/13/13-S1-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2013 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/13/13-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/13/13-S1.tex\"></a></p> "
},
{
 "tags": ["Curve sketching"],
 "question_id":13105,
 "title": "13-S1-Q5",
 "body": "Locus, quadratic, factorisation, circles, coordinate geometry, symmetry, C1.  <p><img src=\"/database/db/13/13-S1-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2013 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/13/13-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/13/13-S1.tex\"></a></p> "
},
{
 "tags": ["Binomial coefficients"],
 "question_id":13106,
 "title": "13-S1-Q6",
 "body": "Sequences, sum, recurrence relation, Fibonacci numbers.  <p><img src=\"/database/db/13/13-S1-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2013 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/13/13-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/13/13-S1.tex\"></a></p> "
},
{
 "tags": ["Differential equations"],
 "question_id":13107,
 "title": "13-S1-Q7",
 "body": "Substitution, logarithmic function.  <p><img src=\"/database/db/13/13-S1-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2013 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/13/13-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/13/13-S1.tex\"></a></p> "
},
{
 "tags": ["Functions"],
 "question_id":13108,
 "title": "13-S1-Q8",
 "body": "Range and domain of logarithmic, polynomial, square root, quadratic functions, composition, curve sketching, asymptotes.  <p><img src=\"/database/db/13/13-S1-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2013 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/13/13-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/13/13-S1.tex\"></a></p> "
},
{
 "tags": ["Projectile motion"],
 "question_id":13109,
 "title": "13-S1-Q9",
 "body": "Simultaneous projection, collide.  <p><img src=\"/database/db/13/13-S1-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2013 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/13/13-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/13/13-S1.tex\"></a></p> "
},
{
 "tags": ["Collision and Friction"],
 "question_id":13110,
 "title": "13-S1-Q10",
 "body": "Ice puck, coefficient of restitution and friction.  <p><img src=\"/database/db/13/13-S1-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2013 Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/13/13-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/13/13-S1.tex\"></a></p> "
},
{
 "tags": ["Friction"],
 "question_id":13111,
 "title": "13-S1-Q11",
 "body": "Block, weight, coefficient of friction, trigonometry.  <p><img src=\"/database/db/13/13-S1-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2013 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/13/13-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/13/13-S1.tex\"></a></p> "
},
{
 "tags": ["Stirling's approximation"],
 "question_id":13112,
 "title": "13-S1-Q12",
 "body": "Medicine tablets, combinatorics, C1.  <p><img src=\"/database/db/13/13-S1-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2013 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/13/13-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/13/13-S1.tex\"></a></p> "
},
{
 "tags": ["Discrete random distribution"],
 "question_id":13113,
 "title": "13-S1-Q13",
 "body": "Random numbers, probability distribution, expectation. <p><img src=\"/database/db/13/13-S1-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2013 Question 13 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/13/13-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/13/13-S1.tex\"></a></p> "
},
{
 "tags": ["Curve sketching"],
 "question_id":13201,
 "title": "13-S2-Q1",
 "body": "Lines and logarithms, inequality.  <p><img src=\"/database/db/13/13-S2-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2013 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/13/13-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/13/13-S2.tex\"></a></p> "
},
{
 "tags": ["Integration"],
 "question_id":13202,
 "title": "13-S2-Q2",
 "body": "Substitution and by parts, recurrence formula.  <p><img src=\"/database/db/13/13-S2-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2013 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/13/13-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/13/13-S2.tex\"></a></p> "
},
{
 "tags": ["Cubic equation"],
 "question_id":13203,
 "title": "13-S2-Q3",
 "body": "Curve sketching, roots of equations, turning points, C1.  <p><img src=\"/database/db/13/13-S2-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2013 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/13/13-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/13/13-S2.tex\"></a></p> "
},
{
 "tags": ["Coordinate geometry"],
 "question_id":13204,
 "title": "13-S2-Q4",
 "body": "Midpoint of chord, line segment, locus, unit circle, C1.  <p><img src=\"/database/db/13/13-S2-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2013 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/13/13-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/13/13-S2.tex\"></a></p> "
},
{
 "tags": ["Functions"],
 "question_id":13205,
 "title": "13-S2-Q5",
 "body": "Functional relations, differentiation, stationary points, inequality, range, C1.  <p><img src=\"/database/db/13/13-S2-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2013 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/13/13-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/13/13-S2.tex\"></a></p> "
},
{
 "tags": ["Sequences"],
 "question_id":13206,
 "title": "13-S2-Q6",
 "body": "Difference equations, proof by induction, convergence to limit.  <p><img src=\"/database/db/13/13-S2-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2013 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/13/13-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/13/13-S2.tex\"></a></p> "
},
{
 "tags": ["Number theory"],
 "question_id":13207,
 "title": "13-S2-Q7",
 "body": "Integer solutions to equations, prime, C1.  <p><img src=\"/database/db/13/13-S2-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2013 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/13/13-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/13/13-S2.tex\"></a></p> "
},
{
 "tags": ["Functions"],
 "question_id":13208,
 "title": "13-S2-Q8",
 "body": "Inequality, strictly decreasing, functional equations, differentiation.  <p><img src=\"/database/db/13/13-S2-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2013 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/13/13-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/13/13-S2.tex\"></a></p> "
},
{
 "tags": ["Friction"],
 "question_id":13209,
 "title": "13-S2-Q9",
 "body": "Discs, normal reaction, equilibrium.  <p><img src=\"/database/db/13/13-S2-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2013 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/13/13-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/13/13-S2.tex\"></a></p> "
},
{
 "tags": ["Projectile motion"],
 "question_id":13210,
 "title": "13-S2-Q10",
 "body": "Trigonometry, trajectory, angle of elevation.  <p><img src=\"/database/db/13/13-S2-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2013 Question 10 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/13/13-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/13/13-S2.tex\"></a></p> "
},
{
 "tags": ["Collision"],
 "question_id":13211,
 "title": "13-S2-Q11",
 "body": "Coefficient of restitution, identical particles.  <p><img src=\"/database/db/13/13-S2-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2013 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/13/13-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/13/13-S2.tex\"></a></p> "
},
{
 "tags": ["Poisson distributions"],
 "question_id":13212,
 "title": "13-S2-Q12",
 "body": "Discrete random variables, expectation and variance.  <p><img src=\"/database/db/13/13-S2-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2013 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/13/13-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/13/13-S2.tex\"></a></p> "
},
{
 "tags": ["Coin toss"],
 "question_id":13213,
 "title": "13-S2-Q13",
 "body": "Elementary probability, straight and alternating runs.  <p><img src=\"/database/db/13/13-S2-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2013 Question 13 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/13/13-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/13/13-S2.tex\"></a></p> "
},
{
 "tags": ["Integration"],
 "question_id":13301,
 "title": "13-S3-Q1",
 "body": "Tan half angle substitution, t-sub, differentiation, trigonometry, recurrence formula.  <p><img src=\"/database/db/13/13-S3-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2013 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/13/13-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/13/13-S3.tex\"></a></p> "
},
{
 "tags": ["Infinite series"],
 "question_id":13302,
 "title": "13-S3-Q2",
 "body": "Differential equations, proof by induction, Maclaurin series.  <p><img src=\"/database/db/13/13-S3-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2013 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/13/13-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/13/13-S3.tex\"></a></p> "
},
{
 "tags": ["Vector geometry"],
 "question_id":13303,
 "title": "13-S3-Q3",
 "body": "Surface of the sphere, position vector.  <p><img src=\"/database/db/13/13-S3-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2013 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/13/13-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/13/13-S3.tex\"></a></p> "
},
{
 "tags": ["Complex sum"],
 "question_id":13304,
 "title": "13-S3-Q4",
 "body": "Roots of unity, trigonometric sum.  <p><img src=\"/database/db/13/13-S3-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2013 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/13/13-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/13/13-S3.tex\"></a></p> "
},
{
 "tags": ["Number theory"],
 "question_id":13305,
 "title": "13-S3-Q5",
 "body": "Coprime, powers of prime, rational, C1.  <p><img src=\"/database/db/13/13-S3-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2013 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/13/13-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/13/13-S3.tex\"></a></p> "
},
{
 "tags": ["Complex numbers"],
 "question_id":13306,
 "title": "13-S3-Q6",
 "body": "Argand diagram, modulus functions, inequality.  <p><img src=\"/database/db/13/13-S3-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2013 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/13/13-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/13/13-S3.tex\"></a></p> "
},
{
 "tags": ["Differential equations"],
 "question_id":13307,
 "title": "13-S3-Q7",
 "body": "Hyperbolic functions.  <p><img src=\"/database/db/13/13-S3-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2013 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/13/13-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/13/13-S3.tex\"></a></p> "
},
{
 "tags": ["Conic sections"],
 "question_id":13308,
 "title": "13-S3-Q8",
 "body": "Complex number, chords, geometry, sum.  <p><img src=\"/database/db/13/13-S3-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2013 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/13/13-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/13/13-S3.tex\"></a></p> "
},
{
 "tags": ["SHM"],
 "question_id":13309,
 "title": "13-S3-Q9",
 "body": "Simple harmonic motion, sphere, displaced liquid, equiibrium, second order differential equation.  <p><img src=\"/database/db/13/13-S3-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2013 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/13/13-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/13/13-S3.tex\"></a></p> "
},
{
 "tags": ["Circular motion"],
 "question_id":13310,
 "title": "13-S3-Q10",
 "body": "Moment of inertia, coefficient of restitution, collision.  <p><img src=\"/database/db/13/13-S3-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2013 Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/13/13-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/13/13-S3.tex\"></a></p> "
},
{
 "tags": ["Hooke's law"],
 "question_id":13311,
 "title": "13-S3-Q11",
 "body": "Equilateral triangle, modulus of elasticity, equilibrium.  <p><img src=\"/database/db/13/13-S3-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 20131 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/13/13-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/13/13-S3.tex\"></a></p> "
},
{
 "tags": ["Discrete random variable"],
 "question_id":13312,
 "title": "13-S3-Q12",
 "body": "Expectation, ordering of letters, sum, variance.  <p><img src=\"/database/db/13/13-S3-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2013 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/13/13-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/13/13-S3.tex\"></a></p> "
},
{
 "tags": ["Cdf"],
 "question_id":13313,
 "title": "13-S3-Q13",
 "body": "Continuous random variables, pdf, integration, inequalities.  <p><img src=\"/database/db/13/13-S3-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2013 Question 13 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/13/13-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/13/13-S3.tex\"></a></p> "
},
{
 "tags": ["Number theory"],
 "question_id":14101,
 "title": "14-S1-Q1",
 "body": "Difference of squares, odd, even, C1.  <p><img src=\"/database/db/14/14-S1-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2014 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/14/14-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/14/14-S1.tex\"></a></p> "
},
{
 "tags": ["Integration"],
 "question_id":14102,
 "title": "14-S1-Q2",
 "body": "Area under curve, modulus and logarithmic functions.  <p><img src=\"/database/db/14/14-S1-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2014 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/14/14-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/14/14-S1.tex\"></a></p> "
},
{
 "tags": ["Curve sketching"],
 "question_id":14103,
 "title": "14-S1-Q3",
 "body": "Integration, cubic.  <p><img src=\"/database/db/14/14-S1-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2014 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/14/14-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/14/14-S1.tex\"></a></p> "
},
{
 "tags": ["Clock"],
 "question_id":14104,
 "title": "14-S1-Q4",
 "body": "Rate of increase, differentiation.  <p><img src=\"/database/db/14/14-S1-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2014 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/14/14-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/14/14-S1.tex\"></a></p> "
},
{
 "tags": ["Cubic equations"],
 "question_id":14105,
 "title": "14-S1-Q5",
 "body": "Factorisation, curve sketching, differentiation, inequality, C1.  <p><img src=\"/database/db/14/14-S1-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2014 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/14/14-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/14/14-S1.tex\"></a></p> "
},
{
 "tags": ["Sequences"],
 "question_id":14106,
 "title": "14-S1-Q6",
 "body": "Substitution, conjecture, proof, difference equation.  <p><img src=\"/database/db/14/14-S1-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2014 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/14/14-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/14/14-S1.tex\"></a></p> "
},
{
 "tags": ["Vector geometry"],
 "question_id":14107,
 "title": "14-S1-Q7",
 "body": "Triangle, ratio, intersection, vectors.  <p><img src=\"/database/db/14/14-S1-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2014 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/14/14-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/14/14-S1.tex\"></a></p> "
},
{
 "tags": ["Coordinate geometry"],
 "question_id":14108,
 "title": "14-S1-Q8",
 "body": "Equation of lines, point of intersection, limit, tangent, C1.  <p><img src=\"/database/db/14/14-S1-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2014 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/14/14-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/14/14-S1.tex\"></a></p> "
},
{
 "tags": ["Projectile motion"],
 "question_id":14109,
 "title": "14-S1-Q9",
 "body": "Greatest height, trajectory sketching, inequality.  <p><img src=\"/database/db/14/14-S1-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2014 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/14/14-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/14/14-S1.tex\"></a></p> "
},
{
 "tags": ["Collision"],
 "question_id":14110,
 "title": "14-S1-Q10",
 "body": "Uniform spherical ball, coefficient of restitution.  <p><img src=\"/database/db/14/14-S1-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2014 Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/14/14-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/14/14-S1.tex\"></a></p> "
},
{
 "tags": ["Pulley"],
 "question_id":14111,
 "title": "14-S1-Q11",
 "body": "Acceleration and tension.  <p><img src=\"/database/db/14/14-S1-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2014 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/14/14-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/14/14-S1.tex\"></a></p> "
},
{
 "tags": ["Gambling"],
 "question_id":14112,
 "title": "14-S1-Q12",
 "body": "Expectation, discrete random variable, strategy, C1.  <p><img src=\"/database/db/14/14-S1-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2014 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/14/14-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/14/14-S1.tex\"></a></p> "
},
{
 "tags": ["Triangular distribution"],
 "question_id":14113,
 "title": "14-S1-Q13",
 "body": "Continuous random variable, pdf, mean and median. <p><img src=\"/database/db/14/14-S1-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2014 Question 13 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/14/14-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/14/14-S1.tex\"></a></p> "
},
{
 "tags": ["Euclidean geometry"],
 "question_id":14201,
 "title": "14-S2-Q1",
 "body": "Triangle, trigonometry, lines produced, C1.  <p><img src=\"/database/db/14/14-S2-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2014 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/14/14-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/14/14-S2.tex\"></a></p> "
},
{
 "tags": ["Inequality"],
 "question_id":14202,
 "title": "14-S2-Q2",
 "body": "Integration, counterexamples, trigonometric and quadratic equations.  <p><img src=\"/database/db/14/14-S2-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2014 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/14/14-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/14/14-S2.tex\"></a></p> "
},
{
 "tags": ["Coordinate geometry"],
 "question_id":14203,
 "title": "14-S2-Q3",
 "body": "Shortest distance, lines and curves, tangent, differential equation.  <p><img src=\"/database/db/14/14-S2-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2014 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/14/14-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/14/14-S2.tex\"></a></p> "
},
{
 "tags": ["Integration by substitution"],
 "question_id":14204,
 "title": "14-S2-Q4",
 "body": "Logarithmic and arctan integral, substitution of 1/x.  <p><img src=\"/database/db/14/14-S2-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2014 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/14/14-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/14/14-S2.tex\"></a></p> "
},
{
 "tags": ["Differential equations"],
 "question_id":14205,
 "title": "14-S2-Q5",
 "body": "Substitution, first order equation, solution curves, quadratic.  <p><img src=\"/database/db/14/14-S2-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2014 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/14/14-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/14/14-S2.tex\"></a></p> "
},
{
 "tags": ["Trigonometric series"],
 "question_id":14206,
 "title": "14-S2-Q6",
 "body": "Sum to product formula, sum, stationary point, differentiation, curve sketching, inequalities, analysis.  <p><img src=\"/database/db/14/14-S2-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2014 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/14/14-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/14/14-S2.tex\"></a></p> "
},
{
 "tags": ["Curve sketching"],
 "question_id":14207,
 "title": "14-S2-Q7",
 "body": "Modulus function, C1.  <p><img src=\"/database/db/14/14-S2-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2014 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/14/14-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/14/14-S2.tex\"></a></p> "
},
{
 "tags": ["Binomial expansion"],
 "question_id":14208,
 "title": "14-S2-Q8",
 "body": "Coefficient, inequality.  <p><img src=\"/database/db/14/14-S2-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2014 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/14/14-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/14/14-S2.tex\"></a></p> "
},
{
 "tags": ["Friction"],
 "question_id":14209,
 "title": "14-S2-Q9",
 "body": "Rectangular lamin, equilibrium.  <p><img src=\"/database/db/14/14-S2-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2014 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/14/14-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/14/14-S2.tex\"></a></p> "
},
{
 "tags": ["Projectile motion"],
 "question_id":14210,
 "title": "14-S2-Q10",
 "body": "Trajectory sketching, furthest range.  <p><img src=\"/database/db/14/14-S2-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2014 Question 10 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/14/14-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/14/14-S2.tex\"></a></p> "
},
{
 "tags": ["Circular motion"],
 "question_id":14211,
 "title": "14-S2-Q11",
 "body": "Second order differential equations, tension, smooth ring, sketch.  <p><img src=\"/database/db/14/14-S2-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2014 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/14/14-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/14/14-S2.tex\"></a></p> "
},
{
 "tags": ["Hazard function"],
 "question_id":14212,
 "title": "14-S2-Q12",
 "body": "Cdf (cumulative distribution function), pdf (probability density function).  <p><img src=\"/database/db/14/14-S2-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2014 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/14/14-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/14/14-S2.tex\"></a></p> "
},
{
 "tags": ["Discrete random variables"],
 "question_id":14213,
 "title": "14-S2-Q13",
 "body": "Sum of series, expectation.  <p><img src=\"/database/db/14/14-S2-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2014 Question 13 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/14/14-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/14/14-S2.tex\"></a></p> "
},
{
 "tags": ["Series"],
 "question_id":14301,
 "title": "14-S3-Q1",
 "body": "Series expansion, logarithm, coefficients, counterexamples and proof.  <p><img src=\"/database/db/14/14-S3-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2014 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/14/14-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/14/14-S3.tex\"></a></p> "
},
{
 "tags": ["Integration by substitution"],
 "question_id":14302,
 "title": "14-S3-Q2",
 "body": "Hyperbolic functions.  <p><img src=\"/database/db/14/14-S3-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2014 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/14/14-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/14/14-S3.tex\"></a></p> "
},
{
 "tags": ["Coordinate geometry"],
 "question_id":14303,
 "title": "14-S3-Q3",
 "body": "Shortest distance of a line and a parabola, parametric equations.  <p><img src=\"/database/db/14/14-S3-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2014 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/14/14-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/14/14-S3.tex\"></a></p> "
},
{
 "tags": ["Variational principle"],
 "question_id":14304,
 "title": "14-S3-Q4",
 "body": "Integration by parts.  <p><img src=\"/database/db/14/14-S3-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2014 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/14/14-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/14/14-S3.tex\"></a></p> "
},
{
 "tags": ["Complex numbers"],
 "question_id":14305,
 "title": "14-S3-Q5",
 "body": "Quadrilateral, parallelogram, square.  <p><img src=\"/database/db/14/14-S3-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2014 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/14/14-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/14/14-S3.tex\"></a></p> "
},
{
 "tags": ["Analysis"],
 "question_id":14306,
 "title": "14-S3-Q6",
 "body": "Differentiation, increasing and decreasing functions, inequality.  <p><img src=\"/database/db/14/14-S3-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2014 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/14/14-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/14/14-S3.tex\"></a></p> "
},
{
 "tags": ["Vectors"],
 "question_id":14307,
 "title": "14-S3-Q7",
 "body": "Triangles, sum, intersection.  <p><img src=\"/database/db/14/14-S3-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2014 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/14/14-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/14/14-S3.tex\"></a></p> "
},
{
 "tags": ["Analysis"],
 "question_id":14308,
 "title": "14-S3-Q8",
 "body": "Inequalities, sum, positive integers, nubmer theory, decimal representation, sum of reciprocals.  <p><img src=\"/database/db/14/14-S3-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2014 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/14/14-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/14/14-S3.tex\"></a></p> "
},
{
 "tags": ["Projectile motion"],
 "question_id":14309,
 "title": "14-S3-Q9",
 "body": "Resistive force, equation of motion, range equation.  <p><img src=\"/database/db/14/14-S3-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2014 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/14/14-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/14/14-S3.tex\"></a></p> "
},
{
 "tags": ["Hooke's law"],
 "question_id":14310,
 "title": "14-S3-Q10",
 "body": "SHM (Simple harmonic motion), second order differential equation, modulus of elasticity.  <p><img src=\"/database/db/14/14-S3-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2014 Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/14/14-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/14/14-S3.tex\"></a></p> "
},
{
 "tags": ["Circular motion"],
 "question_id":14311,
 "title": "14-S3-Q11",
 "body": "Tension, strings, bounds.  <p><img src=\"/database/db/14/14-S3-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 20141 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/14/14-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/14/14-S3.tex\"></a></p> "
},
{
 "tags": ["Normal distribution"],
 "question_id":14312,
 "title": "14-S3-Q12",
 "body": "Median, pdf, expectation, cumulative distribution function (cdf).  <p><img src=\"/database/db/14/14-S3-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2014 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/14/14-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/14/14-S3.tex\"></a></p> "
},
{
 "tags": ["Pgf"],
 "question_id":14313,
 "title": "14-S3-Q13",
 "body": "Strategy, probability generating function.  <p><img src=\"/database/db/14/14-S3-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2014 Question 13 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/14/14-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/14/14-S3.tex\"></a></p> "
},
{
 "tags": ["Curve sketching"],
 "question_id":15101,
 "title": "15-S1-Q1",
 "body": "Exponential function, polynomial, curve sketching, limits.  <p><img src=\"/database/db/15/15-S1-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2015 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/15/15-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/15/15-S1.tex\"></a></p> "
},
{
 "tags": ["Trigonometry"],
 "question_id":15102,
 "title": "15-S1-Q2",
 "body": "Cosine and sine function, root of equation, surds.  <p><img src=\"/database/db/15/15-S1-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2015 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/15/15-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/15/15-S1.tex\"></a></p> "
},
{
 "tags": ["Optimisation"],
 "question_id":15103,
 "title": "15-S1-Q3",
 "body": "Prison guard, square, perimeter, maximise, C1.  <p><img src=\"/database/db/15/15-S1-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2015 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/15/15-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/15/15-S1.tex\"></a></p> "
},
{
 "tags": ["Euclidean geometry"],
 "question_id":15104,
 "title": "15-S1-Q4",
 "body": "Locus of points, trigonometry, tangent function, area of curve, integration.  <p><img src=\"/database/db/15/15-S1-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2015 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/15/15-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/15/15-S1.tex\"></a></p> "
},
{
 "tags": ["Curve sketeching"],
 "question_id":15105,
 "title": "15-S1-Q5",
 "body": "Integration, curve sketching.  <p><img src=\"/database/db/15/15-S1-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2015 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/15/15-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/15/15-S1.tex\"></a></p> "
},
{
 "tags": ["Euclidean geometry"],
 "question_id":15106,
 "title": "15-S1-Q6",
 "body": "Quadrilateral, position vectors, optimisation, square, C1.  <p><img src=\"/database/db/15/15-S1-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2015 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/15/15-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/15/15-S1.tex\"></a></p> "
},
{
 "tags": ["Differentiation"],
 "question_id":15107,
 "title": "15-S1-Q7",
 "body": "Optimisation, interval, greatest value, polynomial, cubic function, C1.  <p><img src=\"/database/db/15/15-S1-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2015 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/15/15-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/15/15-S1.tex\"></a></p> "
},
{
 "tags": ["Number theory"],
 "question_id":15108,
 "title": "15-S1-Q8",
 "body": "Sum, divisibility, series, proof, C1.  <p><img src=\"/database/db/15/15-S1-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2015 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/15/15-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/15/15-S1.tex\"></a></p> "
},
{
 "tags": ["Projectile motion"],
 "question_id":15109,
 "title": "15-S1-Q9",
 "body": "Angle of elevation, bullet, range, short-barrelled machine gun.  <p><img src=\"/database/db/15/15-S1-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2015 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/15/15-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/15/15-S1.tex\"></a></p> "
},
{
 "tags": ["Bus and rain"],
 "question_id":15110,
 "title": "15-S1-Q10",
 "body": "Inclined plane, rain, bus, constant speed, cuboid, C1-ish.  <p><img src=\"/database/db/15/15-S1-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2015 Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/15/15-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/15/15-S1.tex\"></a></p> "
},
{
 "tags": ["Friction"],
 "question_id":15111,
 "title": "15-S1-Q11",
 "body": "Acceleration, coefficient of friction, circular cylinders, inclined plane.  <p><img src=\"/database/db/15/15-S1-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2015 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/15/15-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/15/15-S1.tex\"></a></p> "
},
{
 "tags": ["Poisson distribution"],
 "question_id":15112,
 "title": "15-S1-Q12",
 "body": "Casualties at hospital, mean and probability, poisson distribution.  <p><img src=\"/database/db/15/15-S1-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2015 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/15/15-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/15/15-S1.tex\"></a></p> "
},
{
 "tags": ["Dice"],
 "question_id":15113,
 "title": "15-S1-Q13",
 "body": "Fair die, elementary probability, binomial expansion, C1. <p><img src=\"/database/db/15/15-S1-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2015 Question 13 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/15/15-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/15/15-S1.tex\"></a></p> "
},
{
 "tags": ["Analysis"],
 "question_id":15201,
 "title": "15-S2-Q1",
 "body": "Differentiation, infinite series, sum, inequality, logarithm function.  <p><img src=\"/database/db/15/15-S2-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2015 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/15/15-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/15/15-S2.tex\"></a></p> "
},
{
 "tags": ["Euclidean geometry"],
 "question_id":15202,
 "title": "15-S2-Q2",
 "body": "Trigonometry, sine function, midpoint, perpendicular, bisector, trisection, C1.  <p><img src=\"/database/db/15/15-S2-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2015 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/15/15-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/15/15-S2.tex\"></a></p> "
},
{
 "tags": ["Proof by induction"],
 "question_id":15203,
 "title": "15-S2-Q3",
 "body": "Triangle, induction, degenerate, cases.  <p><img src=\"/database/db/15/15-S2-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2015 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/15/15-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/15/15-S2.tex\"></a></p> "
},
{
 "tags": ["Curve sketching"],
 "question_id":15204,
 "title": "15-S2-Q4",
 "body": "Tangent function, continuous, range, differentiation, stationary point, asymptote, curve sketching.  <p><img src=\"/database/db/15/15-S2-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2015 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/15/15-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/15/15-S2.tex\"></a></p> "
},
{
 "tags": ["Arctan sum"],
 "question_id":15205,
 "title": "15-S2-Q5",
 "body": "Proof, induction, infinite sum, right-angled triangle.  <p><img src=\"/database/db/15/15-S2-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2015 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/15/15-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/15/15-S2.tex\"></a></p> "
},
{
 "tags": ["Integration"],
 "question_id":15206,
 "title": "15-S2-Q6",
 "body": "Integration by substitution, differentiation.  <p><img src=\"/database/db/15/15-S2-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2015 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/15/15-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/15/15-S2.tex\"></a></p> "
},
{
 "tags": ["Coordinate geometry"],
 "question_id":15207,
 "title": "15-S2-Q7",
 "body": "Bisection, circle, diametrically opposite, inequality, C1.  <p><img src=\"/database/db/15/15-S2-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2015 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/15/15-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/15/15-S2.tex\"></a></p> "
},
{
 "tags": ["Vector geometry"],
 "question_id":15208,
 "title": "15-S2-Q8",
 "body": "Non-overlapping circles, tangent, intersection, position vectors, lines.  <p><img src=\"/database/db/15/15-S2-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2015 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/15/15-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/15/15-S2.tex\"></a></p> "
},
{
 "tags": ["Rotating rods"],
 "question_id":15209,
 "title": "15-S2-Q9",
 "body": "Equilateral triangle, light rods, rotate, equilibrium, impulse.  <p><img src=\"/database/db/15/15-S2-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2015 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/15/15-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/15/15-S2.tex\"></a></p> "
},
{
 "tags": ["Pulley"],
 "question_id":15210,
 "title": "15-S2-Q10",
 "body": "Tension, pulley, motion, equilibrium.  <p><img src=\"/database/db/15/15-S2-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2015 Question 10 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/15/15-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/15/15-S2.tex\"></a></p> "
},
{
 "tags": ["Collisions"],
 "question_id":15211,
 "title": "15-S2-Q11",
 "body": "Impulse, elastic collision, kinematics, differential equations, impulse, inextensible string.  <p><img src=\"/database/db/15/15-S2-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2015 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/15/15-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/15/15-S2.tex\"></a></p> "
},
{
 "tags": ["Coin toss"],
 "question_id":15212,
 "title": "15-S2-Q12",
 "body": "Coin-tossing game, sequence, elementary probability, C1  <p><img src=\"/database/db/15/15-S2-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2015 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/15/15-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/15/15-S2.tex\"></a></p> "
},
{
 "tags": ["Random variable"],
 "question_id":15213,
 "title": "15-S2-Q13",
 "body": "Probability density function (pdf), flood, cost, expectation and variance.  <p><img src=\"/database/db/15/15-S2-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2015 Question 13 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/15/15-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/15/15-S2.tex\"></a></p> "
},
{
 "tags": ["Integration"],
 "question_id":15301,
 "title": "15-S3-Q1",
 "body": "Recurrence relation, integration by substitution.  <p><img src=\"/database/db/15/15-S3-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2015 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/15/15-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/15/15-S3.tex\"></a></p> "
},
{
 "tags": ["Analysis"],
 "question_id":15302,
 "title": "15-S3-Q2",
 "body": "Sequences, proof, counter-example.  <p><img src=\"/database/db/15/15-S3-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2015 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/15/15-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/15/15-S3.tex\"></a></p> "
},
{
 "tags": ["Polar coordinates"],
 "question_id":15303,
 "title": "15-S3-Q3",
 "body": "Conchoid of Nicomedes, polar coordinates, secant function, trigonometry, integration, area of loop.  <p><img src=\"/database/db/15/15-S3-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2015 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/15/15-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/15/15-S3.tex\"></a></p> "
},
{
 "tags": ["Roots of polynomials"],
 "question_id":15304,
 "title": "15-S3-Q4",
 "body": "Cubic function, real root, algebra, trigonometry, sine function.  <p><img src=\"/database/db/15/15-S3-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2015 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/15/15-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/15/15-S3.tex\"></a></p> "
},
{
 "tags": ["Number theory"],
 "question_id":15305,
 "title": "15-S3-Q5",
 "body": "Proof by contradiction, irrationality of square root 2, rational, C1.  <p><img src=\"/database/db/15/15-S3-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2015 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/15/15-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/15/15-S3.tex\"></a></p> "
},
{
 "tags": ["Complex system"],
 "question_id":15306,
 "title": "15-S3-Q6",
 "body": "System of equation, proof, real and complex values.  <p><img src=\"/database/db/15/15-S3-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2015 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/15/15-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/15/15-S3.tex\"></a></p> "
},
{
 "tags": ["Differentiation"],
 "question_id":15307,
 "title": "15-S3-Q7",
 "body": "Operators, polynomial, divisibility, sum, identity, positive integers, order of polynomials, proof.  <p><img src=\"/database/db/15/15-S3-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2015 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/15/15-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/15/15-S3.tex\"></a></p> "
},
{
 "tags": ["Differential equations"],
 "question_id":15308,
 "title": "15-S3-Q8",
 "body": "Curve sketching, polar coordinate, differential equations.  <p><img src=\"/database/db/15/15-S3-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2015 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/15/15-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/15/15-S3.tex\"></a></p> "
},
{
 "tags": ["Elastic string"],
 "question_id":15309,
 "title": "15-S3-Q9",
 "body": "Impulse, acceleration, period of motion, integral.  <p><img src=\"/database/db/15/15-S3-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2015 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/15/15-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/15/15-S3.tex\"></a></p> "
},
{
 "tags": ["Kinematics"],
 "question_id":15310,
 "title": "15-S3-Q10",
 "body": "Differential equations, rod.  <p><img src=\"/database/db/15/15-S3-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2015 Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/15/15-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/15/15-S3.tex\"></a></p> "
},
{
 "tags": ["Circular motion"],
 "question_id":15311,
 "title": "15-S3-Q11",
 "body": "Horizontal disc, rotation, moment.  <p><img src=\"/database/db/15/15-S3-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 20151 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/15/15-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/15/15-S3.tex\"></a></p> "
},
{
 "tags": ["Dice"],
 "question_id":15312,
 "title": "15-S3-Q12",
 "body": "Fair die, random variable, independent, probability generating function (pgf) probability, divisibility, remainder.  <p><img src=\"/database/db/15/15-S3-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2015 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/15/15-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/15/15-S3.tex\"></a></p> "
},
{
 "tags": ["Uniform distribution"],
 "question_id":15313,
 "title": "15-S3-Q13",
 "body": "Independent random variable, normal distribution, cumulative function, probability density function (pdf), expectation.  <p><img src=\"/database/db/15/15-S3-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2015 Question 13 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/15/15-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/15/15-S3.tex\"></a></p> "
},
{
 "tags": ["Polynomials"],
 "question_id":16101,
 "title": "16-S1-Q1",
 "body": "factorising, powers of 7.  <p><img src=\"/database/db/16/16-S1-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2016 Question 1 (Pure Mathematics)]</b><p><a class=\"linkpdf\" href=\"/database/db/16/16-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/16/16-S1.tex\"></a></p> "
},
{
 "tags": ["Anti-differentiation"],
 "question_id":16102,
 "title": "16-S1-Q1",
 "body": "differentiation, integration, anti-derivative.  <p><img src=\"/database/db/16/16-S1-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2016 Question 2 (Pure Mathematics)]</b><p><a class=\"linkpdf\" href=\"/database/db/16/16-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/16/16-S1.tex\"></a></p> "
},
{
 "tags": ["Graphs of floor functions"],
 "question_id":16103,
 "title": "16-S1-Q1",
 "body": "graphs, floor function, integer part, discontinuity.  <p><img src=\"/database/db/16/16-S1-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2016 Question 3 (Pure Mathematics)]</b><p><a class=\"linkpdf\" href=\"/database/db/16/16-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/16/16-S1.tex\"></a></p> "
},
{
 "tags": ["Touching circles"],
 "question_id":16104,
 "title": "16-S1-Q4",
 "body": "geometry, circles, touching circles, common tangent, radius.  <p><img src=\"/database/db/16/16-S1-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2016 Question 4 (Pure Mathematics)]</b><p><a class=\"linkpdf\" href=\"/database/db/16/16-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/16/16-S1.tex\"></a></p> "
},
{
 "tags": ["Curvature"],
 "question_id":16105,
 "title": "16-S1-Q5",
 "body": "differentiation, curvature, radius of curvature.  <p><img src=\"/database/db/16/16-S1-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2016 Question 5 (Pure Mathematics)]</b><p><a class=\"linkpdf\" href=\"/database/db/16/16-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/16/16-S1.tex\"></a></p> "
},
{
 "tags": ["Vector geometry"],
 "question_id":16106,
 "title": "16-S1-Q6",
 "body": "vectors, vector geometry,quadrilateral, diagonal.  <p><img src=\"/database/db/16/16-S1-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2016 Question 6 (Pure Mathematics)]</b><p><a class=\"linkpdf\" href=\"/database/db/16/16-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/16/16-S1.tex\"></a></p> "
},
{
 "tags": ["Integer sets"],
 "question_id":16107,
 "title": "16-S1-Q7",
 "body": "sets, integers, prime numbers, mod 4,base 4.  <p><img src=\"/database/db/16/16-S1-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2016 Question 7 (Pure Mathematics)]</b><p><a class=\"linkpdf\" href=\"/database/db/16/16-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/16/16-S1.tex\"></a></p> "
},
{
 "tags": ["Generating functions"],
 "question_id":16108,
 "title": "16-S1-Q8",
 "body": "sequences, generating functions, recurrence relations, difference equation.  <p><img src=\"/database/db/16/16-S1-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2016 Question 8 (Pure Mathematics)]</b><p><a class=\"linkpdf\" href=\"/database/db/16/16-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/16/16-S1.tex\"></a></p> "
},
{
 "tags": ["Static equilibrium: wall and rod"],
 "question_id":16109,
 "title": "16-S1-Q9",
 "body": "statics, equilibrium, friction, wall, rod, rail.  <p><img src=\"/database/db/16/16-S1-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2016 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/16/16-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/16/16-S1.tex\"></a></p> "
},
{
 "tags": ["Particle collisions"],
 "question_id":16110,
 "title": "16-S1-Q10",
 "body": "particles, coefficient of restitution, collisions.  <p><img src=\"/database/db/16/16-S1-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2016 Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/16/16-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/16/16-S1.tex\"></a></p> "
},
{
 "tags": ["Projectile and tower"],
 "question_id":16111,
 "title": "16-S1-Q11",
 "body": "projectile, tower, greatest distance.  <p><img src=\"/database/db/16/16-S1-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2016 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/16/16-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/16/16-S1.tex\"></a></p> "
},
{
 "tags": ["Coin tossing"],
 "question_id":16112,
 "title": "16-S1-Q12",
 "body": "coins, tossing, Bob, Alice .  <p><img src=\"/database/db/16/16-S1-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2016 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/16/16-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/16/16-S1.tex\"></a></p> "
},
{
 "tags": ["Internet tester"],
 "question_id":16113,
 "title": "16-S1-Q13",
 "body": "arrival times, exponential distribution, expectation.  <p><img src=\"/database/db/16/16-S1-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2016 Question 13 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/16/16-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/16/16-S1.tex\"></a></p> "
},
{
 "tags": ["Coordinate geometry"],
 "question_id":16201,
 "title": "16-S2-Q1",
 "body": "coordinate geometry, parametric equation, tangent, parabola.  <p><img src=\"/database/db/16/16-S2-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2016 Question 1 (Pure Mathematics)]</b><p><a class=\"linkpdf\" href=\"/database/db/16/16-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/16/16-S2.tex\"></a></p> "
},
{
 "tags": ["Factor theorem"],
 "question_id":16202,
 "title": "16-S2-Q2",
 "body": "factor theorem, cubic equation.  <p><img src=\"/database/db/16/16-S2-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2016 Question 2 (Pure Mathematics)]</b><p><a class=\"linkpdf\" href=\"/database/db/16/16-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/16/16-S2.tex\"></a></p> "
},
{
 "tags": ["Roots of polynomial"],
 "question_id":16203,
 "title": "16-S2-Q3",
 "body": "polynommial, roots, exponential series.  <p><img src=\"/database/db/16/16-S2-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2016 Question 3 (Pure Mathematics)]</b><p><a class=\"linkpdf\" href=\"/database/db/16/16-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/16/16-S2.tex\"></a></p> "
},
{
 "tags": ["Inequalities for rational function "],
 "question_id":16204,
 "title": "16-S2-Q4",
 "body": "inequality, rational function, quadratic ratio.  <p><img src=\"/database/db/16/16-S2-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2016 Question 4 (Pure Mathematics)]</b><p><a class=\"linkpdf\" href=\"/database/db/16/16-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/16/16-S2.tex\"></a></p> "
},
{
 "tags": ["Binomial identities"],
 "question_id":16205,
 "title": "16-S2-Q5",
 "body": "binomial coefficient, negative binomial expansion,chu, vandermonde identity.  <p><img src=\"/database/db/16/16-S2-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2016 Question 5 (Pure Mathematics)]</b><p><a class=\"linkpdf\" href=\"/database/db/16/16-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/16/16-S2.tex\"></a></p> "
},
{
 "tags": ["Quadratic differential equation"],
 "question_id":16206,
 "title": "16-S2-Q6",
 "body": "differential equation, Legendre equation, Legendre polynomials.  <p><img src=\"/database/db/16/16-S2-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2016 Question 6 (Pure Mathematics)]</b><p><a class=\"linkpdf\" href=\"/database/db/16/16-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/16/16-S2.tex\"></a></p> "
},
{
 "tags": ["Trigonometric integrals"],
 "question_id":16207,
 "title": "16-S2-Q7",
 "body": "integral, substitution, change of variable, trigonometric functions.  <p><img src=\"/database/db/16/16-S2-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2016 Question 7 (Pure Mathematics)]</b><p><a class=\"linkpdf\" href=\"/database/db/16/16-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/16/16-S2.tex\"></a></p> "
},
{
 "tags": ["Approximating sums using integrals"],
 "question_id":16208,
 "title": "16-S2-Q8",
 "body": "integral, sums, approximations, zeta function.  <p><img src=\"/database/db/16/16-S2-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2016 Question 8 (Pure Mathematics)]</b><p><a class=\"linkpdf\" href=\"/database/db/16/16-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/16/16-S2.tex\"></a></p> "
},
{
 "tags": ["Bullet fired into block"],
 "question_id":16209,
 "title": "16-S2-Q9",
 "body": "bullet, resistence, block of wood, momentum conservation.  <p><img src=\"/database/db/16/16-S2-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2016 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/16/16-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/16/16-S2.tex\"></a></p> "
},
{
 "tags": ["Hanging triangle"],
 "question_id":16210,
 "title": "16-S2-Q10",
 "body": "statics, equilibrium, triangle, friction, coefficient of friction.  <p><img src=\"/database/db/16/16-S2-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2016 Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/16/16-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/16/16-S2.tex\"></a></p> "
},
{
 "tags": ["Projectile and target"],
 "question_id":16211,
 "title": "16-S2-Q11",
 "body": "projectile, target, collision.  <p><img src=\"/database/db/16/16-S2-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2016 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/16/16-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/16/16-S2.tex\"></a></p> "
},
{
 "tags": ["Old hat probability problem"],
 "question_id":16212,
 "title": "16-S2-Q12",
 "body": "probability, inclusion-exclusion, hats, playing cards.  <p><img src=\"/database/db/16/16-S2-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2016 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/16/16-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/16/16-S2.tex\"></a></p> "
},
{
 "tags": ["Binomial distribution approximations"],
 "question_id":16213,
 "title": "16-S2-Q13",
 "body": "Binomial distribution, Normal approximation, Poission approximation, n! estimate, Stirling's approximation.  <p><img src=\"/database/db/16/16-S2-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2016 Question 13 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/16/16-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/16/16-S2.tex\"></a></p> "
},
{
 "tags": ["Integral reduction"],
 "question_id":16301,
 "title": "16-S3-Q1",
 "body": "Integral, infinite integral, reduction formula, induction.  <p><img src=\"/database/db/16/16-S3-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2016 Question 1 (Pure Mathematics)]</b><p><a class=\"linkpdf\" href=\"/database/db/16/16-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/16/16-S3.tex\"></a></p> "
},
{
 "tags": ["Parabola normals"],
 "question_id":16302,
 "title": "16-S3-Q2",
 "body": "Coordinate geometry, parabola, normals, intersecting normals.  <p><img src=\"/database/db/16/16-S3-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2016 Question 2 (Pure Mathematics)]</b><p><a class=\"linkpdf\" href=\"/database/db/16/16-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/16/16-S3.tex\"></a></p> "
},
{
 "tags": ["Integration"],
 "question_id":16303,
 "title": "16-S3-Q3",
 "body": "Integration, exponential, rational function, polynomial.  <p><img src=\"/database/db/16/16-S3-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2016 Question 3 (Pure Mathematics)]</b><p><a class=\"linkpdf\" href=\"/database/db/16/16-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/16/16-S3.tex\"></a></p> "
},
{
 "tags": ["Telescoping sums"],
 "question_id":16304,
 "title": "16-S3-Q4",
 "body": "Sum, telescoping sum, hyperbolic functions.  <p><img src=\"/database/db/16/16-S3-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2016 Question 4 (Pure Mathematics)]</b><p><a class=\"linkpdf\" href=\"/database/db/16/16-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/16/16-S3.tex\"></a></p> "
},
{
 "tags": ["Prime number distribution"],
 "question_id":16305,
 "title": "16-S3-Q5",
 "body": "Binomial coefficients, inequalities, prime numbers, distribution of primes.  <p><img src=\"/database/db/16/16-S3-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2016 Question 5 (Pure Mathematics)]</b><p><a class=\"linkpdf\" href=\"/database/db/16/16-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/16/16-S3.tex\"></a></p> "
},
{
 "tags": ["Intersecting curves number"],
 "question_id":16306,
 "title": "16-S3-Q6",
 "body": "Hyperbolic functions, conditions for intersection, intersection, amplitude phase.  <p><img src=\"/database/db/16/16-S3-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2016 Question 6 (Pure Mathematics)]</b><p><a class=\"linkpdf\" href=\"/database/db/16/16-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/16/16-S3.tex\"></a></p> "
},
{
 "tags": ["Argand geometry"],
 "question_id":16307,
 "title": "16-S3-Q7",
 "body": "roots of unity, polygon, argand diagram, complex numbers, side lengths.  <p><img src=\"/database/db/16/16-S3-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2016 Question 7 (Pure Mathematics)]</b><p><a class=\"linkpdf\" href=\"/database/db/16/16-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/16/16-S3.tex\"></a></p> "
},
{
 "tags": ["Functional equations"],
 "question_id":16308,
 "title": "16-S3-Q8",
 "body": "functional equations, simultaneous functional equations.  <p><img src=\"/database/db/16/16-S3-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2016 Question 8 (Pure Mathematics)]</b><p><a class=\"linkpdf\" href=\"/database/db/16/16-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/16/16-S3.tex\"></a></p> "
},
{
 "tags": ["Simple harmonic motion"],
 "question_id":16309,
 "title": "16-S3-Q9",
 "body": "simple harmonic motion, equilibrium, triangle, springs, modulus of elasticity.  <p><img src=\"/database/db/16/16-S3-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2016 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/16/16-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/16/16-S3.tex\"></a></p> "
},
{
 "tags": ["Motion on a plane"],
 "question_id":16310,
 "title": "16-S3-Q10",
 "body": "plane, string, impulse.  <p><img src=\"/database/db/16/16-S3-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2016 Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/16/16-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/16/16-S3.tex\"></a></p> "
},
{
 "tags": ["Accelerating car"],
 "question_id":16311,
 "title": "16-S3-Q11",
 "body": "car, work, work rate, resistance.  <p><img src=\"/database/db/16/16-S3-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2016 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/16/16-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/16/16-S3.tex\"></a></p> "
},
{
 "tags": ["Chebyshev's inequality"],
 "question_id":16312,
 "title": "16-S3-Q12",
 "body": "Chebyshev, inequality, coin tossing.  <p><img src=\"/database/db/16/16-S3-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2016 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/16/16-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/16/16-S3.tex\"></a></p> "
},
{
 "tags": ["Kurtosis"],
 "question_id":16313,
 "title": "16-S3-Q13",
 "body": "expectation, random variable,Normal distribution.  <p><img src=\"/database/db/16/16-S3-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2016 Question 13 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/16/16-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/16/16-S3.tex\"></a></p> "
},
{
 "tags": ["Integration by substitution"],
 "question_id":17101,
 "title": "17-S1-Q1",
 "body": "Integration, substitution, trigonometry.  <p><img src=\"/database/db/17/17-S1-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2017 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/17/17-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/17/17-S1.tex\"></a></p> "
},
{
 "tags": ["Inequlaities"],
 "question_id":17102,
 "title": "17-S1-Q2",
 "body": "Inequalities, integration, logarithm.  <p><img src=\"/database/db/17/17-S1-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2017 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/17/17-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/17/17-S1.tex\"></a></p> "
},
{
 "tags": ["Parabola"],
 "question_id":17103,
 "title": "17-S1-Q3",
 "body": "Parabola, tangents, intersection, area.  <p><img src=\"/database/db/17/17-S1-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2017 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/17/17-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/17/17-S1.tex\"></a></p> "
},
{
 "tags": ["Geometric progression"],
 "question_id":17104,
 "title": "17-S1-Q4",
 "body": "Geometric progression, sum, sum of first three terms.  <p><img src=\"/database/db/17/17-S1-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2017 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/17/17-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/17/17-S1.tex\"></a></p> "
},
{
 "tags": ["Area of rectangle in circle segment"],
 "question_id":17105,
 "title": "17-S1-Q5",
 "body": "Circle, segment, rectangle, greatest area, maximisation.  <p><img src=\"/database/db/17/17-S1-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2017 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/17/17-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/17/17-S1.tex\"></a></p> "
},
{
 "tags": ["Integration"],
 "question_id":17106,
 "title": "17-S1-Q6",
 "body": "Integration, moments.  <p><img src=\"/database/db/17/17-S1-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2017 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/17/17-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/17/17-S1.tex\"></a></p> "
},
{
 "tags": ["Triangles"],
 "question_id":17107,
 "title": "17-S1-Q7",
 "body": "Triangles, equilateral triangles, cosine rule, areas.  <p><img src=\"/database/db/17/17-S1-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2017 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/17/17-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/17/17-S1.tex\"></a></p> "
},
{
 "tags": ["Sequence"],
 "question_id":17108,
 "title": "17-S1-Q8",
 "body": "Sequences, double sequences, induction, approximation for root two, rational approximation.  <p><img src=\"/database/db/17/17-S1-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2017 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/17/17-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/17/17-S1.tex\"></a></p> "
},
{
 "tags": ["Projectile motion"],
 "question_id":17109,
 "title": "17-S1-Q9",
 "body": "Projectile, angle of projection, minimum angle of projection.  <p><img src=\"/database/db/17/17-S1-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2017 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/17/17-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/17/17-S1.tex\"></a></p> "
},
{
 "tags": ["Colliding particles"],
 "question_id":17110,
 "title": "17-S1-Q10",
 "body": "Particles, collisions, coefficient of restitution, kinetic energy.  <p><img src=\"/database/db/17/17-S1-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2017 Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/17/17-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/17/17-S1.tex\"></a></p> "
},
{
 "tags": ["Box on inclined plane"],
 "question_id":17111,
 "title": "17-S1-Q11",
 "body": "Box, inclined plane, friction, slipping, limiting equilibrium.  <p><img src=\"/database/db/17/17-S1-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2017 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/17/17-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/17/17-S1.tex\"></a></p> "
},
{
 "tags": ["Lottery"],
 "question_id":17112,
 "title": "17-S1-Q12",
 "body": "Lottery, random numbers, expected profit, expected loss, popular numbers.  <p><img src=\"/database/db/17/17-S1-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2017 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/17/17-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/17/17-S1.tex\"></a></p> "
},
{
 "tags": ["Sliced loaf"],
 "question_id":17113,
 "title": "17-S1-Q13",
 "body": "Bread, slices, toast, sandwich, recurrence relations. <p><img src=\"/database/db/17/17-S1-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2017 Question 13 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/17/17-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/17/17-S1.tex\"></a></p> "
},
{
 "tags": ["arctan integral"],
 "question_id":17201,
 "title": "17-S2-Q1",
 "body": "integration, arctan, recurrence, induction.  <p><img src=\"/database/db/17/17-S2-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2017 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/17/17-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/17/17-S2.tex\"></a></p> "
},
{
 "tags": ["Periodic sequences"],
 "question_id":17202,
 "title": "17-S2-Q2",
 "body": "Sequence, period, period 2, period 4.  <p><img src=\"/database/db/17/17-S2-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2017 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/17/17-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/17/17-S2.tex\"></a></p> "
},
{
 "tags": ["Trigonometric equations"],
 "question_id":17203,
 "title": "17-S2-Q3",
 "body": "Trigonometric equations, sin, arcsin, sin graph, curve sketching.  <p><img src=\"/database/db/17/17-S2-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2017 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/17/17-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/17/17-S2.tex\"></a></p> "
},
{
 "tags": ["Schwarz inequality"],
 "question_id":17204,
 "title": "17-S2-Q4",
 "body": "Inequalities, integral inequalities, Schwarz inequality, sin, exponential, gaussian integral .  <p><img src=\"/database/db/17/17-S2-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2017 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/17/17-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/17/17-S2.tex\"></a></p> "
},
{
 "tags": ["Parabola and circle"],
 "question_id":17205,
 "title": "17-S2-Q5",
 "body": "Parabola, parametric equations, normal, chord length, circle, minimum diameter.  <p><img src=\"/database/db/17/17-S2-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2017 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/17/17-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/17/17-S2.tex\"></a></p> "
},
{
 "tags": ["Inverse square root series"],
 "question_id":17206,
 "title": "17-S2-Q6",
 "body": "Series, square root, induction, inequalities.  <p><img src=\"/database/db/17/17-S2-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2017 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/17/17-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/17/17-S2.tex\"></a></p> "
},
{
 "tags": ["x to the power x to the power x"],
 "question_id":17207,
 "title": "17-S2-Q7",
 "body": "Inequlaities, limits, x to the power x, curve sketching, logarithms.  <p><img src=\"/database/db/17/17-S2-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2017 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/17/17-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/17/17-S2.tex\"></a></p> "
},
{
 "tags": ["Vector geometry"],
 "question_id":17208,
 "title": "17-S2-Q8",
 "body": "Vectors, position vectors, vector geometry, triangle, vector equation of line, altitudes.  <p><img src=\"/database/db/17/17-S2-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2017 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/17/17-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/17/17-S2.tex\"></a></p> "
},
{
 "tags": ["Plank on cylinders"],
 "question_id":17209,
 "title": "17-S2-Q9",
 "body": "Equilibrium, friction, limiting friction, cylinders, plank, normal reaction, inequalities.  <p><img src=\"/database/db/17/17-S2-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2017 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/17/17-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/17/17-S2.tex\"></a></p> "
},
{
 "tags": ["Car with air and rolling resistance"],
 "question_id":17210,
 "title": "17-S2-Q10",
 "body": "Car, journey, air resistance, rolling resistance, acceleration, driving force, work.  <p><img src=\"/database/db/17/17-S2-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2017 Question 10 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/17/17-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/17/17-S2.tex\"></a></p> "
},
{
 "tags": ["Projectile"],
 "question_id":17211,
 "title": "17-S2-Q11",
 "body": "Projectile, walls.  <p><img src=\"/database/db/17/17-S2-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2017 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/17/17-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/17/17-S2.tex\"></a></p> "
},
{
 "tags": ["Fishing"],
 "question_id":17212,
 "title": "17-S2-Q12",
 "body": "Fishing, Adam, Eve, Poisson, binomial, expected time, Poisson process.   <p><img src=\"/database/db/17/17-S2-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2017 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/17/17-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/17/17-S2.tex\"></a></p> "
},
{
 "tags": ["Game show"],
 "question_id":17213,
 "title": "17-S2-Q13",
 "body": "Game show, keys, door, random, binomial expansion.  <p><img src=\"/database/db/17/17-S2-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2017 Question 13 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/17/17-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/17/17-S2.tex\"></a></p> "
},
{
 "tags": ["Inverse cube series"],
 "question_id":17301,
 "title": "17-S3-Q1",
 "body": "Series, inverse cube, binomial coefficients, inequalities, sum of series, infinite sum.  <p><img src=\"/database/db/17/17-S3-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2017 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/17/17-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/17/17-S3.tex\"></a></p> "
},
{
 "tags": ["Transformations"],
 "question_id":17302,
 "title": "17-S3-Q2",
 "body": "Transformations, rotations, complex numbers, Argand diagram, compound transformations.   <p><img src=\"/database/db/17/17-S3-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2017 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/17/17-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/17/17-S3.tex\"></a></p> "
},
{
 "tags": ["Quartic equation"],
 "question_id":17303,
 "title": "17-S3-Q3",
 "body": "Quartic equation, roots, cubic equation.  <p><img src=\"/database/db/17/17-S3-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2017 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/17/17-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/17/17-S3.tex\"></a></p> "
},
{
 "tags": ["Geomtric mean"],
 "question_id":17304,
 "title": "17-S3-Q4",
 "body": "Geometric mean, exponential, integration.  <p><img src=\"/database/db/17/17-S3-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2017 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/17/17-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/17/17-S3.tex\"></a></p> "
},
{
 "tags": ["Polar equations"],
 "question_id":17305,
 "title": "17-S3-Q5",
 "body": "Polar equations, perpendicular curves, orthogonal families of curves, cardioid, families of curves.  <p><img src=\"/database/db/17/17-S3-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2017 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/17/17-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/17/17-S3.tex\"></a></p> "
},
{
 "tags": ["Arctan"],
 "question_id":17306,
 "title": "17-S3-Q6",
 "body": "Integration, Arctan, integral definition.  <p><img src=\"/database/db/17/17-S3-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2017 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/17/17-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/17/17-S3.tex\"></a></p> "
},
{
 "tags": ["Ellipse"],
 "question_id":17307,
 "title": "17-S3-Q7",
 "body": "Ellipse, tangent, intersecting tangents.  <p><img src=\"/database/db/17/17-S3-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2017 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/17/17-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/17/17-S3.tex\"></a></p> "
},
{
 "tags": ["Trigonometric sums"],
 "question_id":17308,
 "title": "17-S3-Q8",
 "body": "Summation by parts, trigonometric sums, sine sum, cosine sum.  <p><img src=\"/database/db/17/17-S3-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2017 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/17/17-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/17/17-S3.tex\"></a></p> "
},
{
 "tags": ["Particles connected by spring"],
 "question_id":17309,
 "title": "17-S3-Q9",
 "body": "Spring, particles, modulus of elasticity, gravity, table, energy conservation.  <p><img src=\"/database/db/17/17-S3-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2017 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/17/17-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/17/17-S3.tex\"></a></p> "
},
{
 "tags": ["Hinged rod"],
 "question_id":17310,
 "title": "17-S3-Q10",
 "body": "Rod, hinge, normal reaction, particle, friction, coefficient of friction.  <p><img src=\"/database/db/17/17-S3-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2017 Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/17/17-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/17/17-S3.tex\"></a></p> "
},
{
 "tags": ["Gun carriage"],
 "question_id":17311,
 "title": "17-S3-Q11",
 "body": "Gun, projectile, truck, kinetic energy, momentum.  <p><img src=\"/database/db/17/17-S3-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2017 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/17/17-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/17/17-S3.tex\"></a></p> "
},
{
 "tags": ["Discrete random variable"],
 "question_id":17312,
 "title": "17-S3-Q12",
 "body": "Discrete random variable, joint probability distribution, independence, covariance.  <p><img src=\"/database/db/17/17-S3-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2017 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/17/17-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/17/17-S3.tex\"></a></p> "
},
{
 "tags": ["Variance"],
 "question_id":17313,
 "title": "17-S3-Q13",
 "body": "Random variable, expectation, variance, uniform distribution.  <p><img src=\"/database/db/17/17-S3-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2017 Question 13 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/17/17-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/17/17-S3.tex\"></a></p> "
},
{
 "tags": ["Area between curve and line"],
 "question_id":18101,
 "title": "18-S1-Q1",
 "body": "Integration, area, tangent, triangle, inequality.  <p><img src=\"/database/db/18/18-S1-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2018 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/18/18-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/18/18-S1.tex\"></a></p> "
},
{
 "tags": ["Logarithms"],
 "question_id":18102,
 "title": "18-S1-Q2",
 "body": "Logarithm, pi, Euler, inequalities, bounds, approximation.  <p><img src=\"/database/db/18/18-S1-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2018 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/18/18-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/18/18-S1.tex\"></a></p> "
},
{
 "tags": ["Hyperbola"],
 "question_id":18103,
 "title": "18-S1-Q3",
 "body": "Hyperbola, angles.  <p><img src=\"/database/db/18/18-S1-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2018 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/18/18-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/18/18-S1.tex\"></a></p> "
},
{
 "tags": ["Sketching an integral function"],
 "question_id":18104,
 "title": "18-S1-Q4",
 "body": "Integration, by substitution, curve sketching.  <p><img src=\"/database/db/18/18-S1-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2018 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/18/18-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/18/18-S1.tex\"></a></p> "
},
{
 "tags": ["Polynomials at integer points"],
 "question_id":18105,
 "title": "18-S1-Q5",
 "body": "Polynomials, integers, polynomial degree.  <p><img src=\"/database/db/18/18-S1-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2018 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/18/18-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/18/18-S1.tex\"></a></p> "
},
{
 "tags": ["Numerical integration"],
 "question_id":18106,
 "title": "18-S1-Q6",
 "body": "Numerical integration, trigonometry, trapezium rule, midpoint rule.  <p><img src=\"/database/db/18/18-S1-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2018 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/18/18-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/18/18-S1.tex\"></a></p> "
},
{
 "tags": ["Solving the cubic"],
 "question_id":18107,
 "title": "18-S1-Q7",
 "body": "Cubic, Mobius, roots.  <p><img src=\"/database/db/18/18-S1-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2018 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/18/18-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/18/18-S1.tex\"></a></p> "
},
{
 "tags": ["Coupled differential equations"],
 "question_id":18108,
 "title": "18-S1-Q8",
 "body": "Integral, differential equation, generalised trigonometric functions.  <p><img src=\"/database/db/18/18-S1-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2018 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/18/18-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/18/18-S1.tex\"></a></p> "
},
{
 "tags": ["Motion on two inclined roads"],
 "question_id":18109,
 "title": "18-S1-Q9",
 "body": "Road, go-kart, traffic lights, inclined plane, energy, two roads.  <p><img src=\"/database/db/18/18-S1-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2018 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/18/18-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/18/18-S1.tex\"></a></p> "
},
{
 "tags": ["Tension in train coupling"],
 "question_id":18110,
 "title": "18-S1-Q10",
 "body": "Train, tension, carriages, engine, compression.  <p><img src=\"/database/db/18/18-S1-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2018 Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/18/18-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/18/18-S1.tex\"></a></p> "
},
{
 "tags": ["Pulley and rough inclined plane"],
 "question_id":18111,
 "title": "18-S1-Q11",
 "body": "Inelastic string, pulley, equilibrium, coeffcient of friction, bound, inclined plane, friction.  <p><img src=\"/database/db/18/18-S1-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2018 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/18/18-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/18/18-S1.tex\"></a></p> "
},
{
 "tags": ["Coin tosses"],
 "question_id":18112,
 "title": "18-S1-Q12",
 "body": "Coins, bag, coin toss, expectation, variance.  <p><img src=\"/database/db/18/18-S1-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2018 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/18/18-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/18/18-S1.tex\"></a></p> "
},
{
 "tags": ["Multiple choice questions"],
 "question_id":18113,
 "title": "18-S1-Q13",
 "body": "Multiple choice, test, MCQ, probability, random answers. <p><img src=\"/database/db/18/18-S1-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP I 2018 Question 13 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/18/18-S1.pdf\"></a><a class=\"linktex\" href=\"/database/db/18/18-S1.tex\"></a></p> "
},
{
 "tags": ["Quartic repeated roots"],
 "question_id":18201,
 "title": "18-S2-Q1",
 "body": "Quartic, roots, repeated roots, symmetric polynomial.  <p><img src=\"/database/db/18/18-S2-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2018 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/18/18-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/18/18-S2.tex\"></a></p> "
},
{
 "tags": ["Concave functions"],
 "question_id":18202,
 "title": "18-S2-Q2",
 "body": "Concave, Jensen, inequalities, triangles, mean.  <p><img src=\"/database/db/18/18-S2-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2018 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/18/18-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/18/18-S2.tex\"></a></p> "
},
{
 "tags": ["Tan integral"],
 "question_id":18203,
 "title": "18-S2-Q3",
 "body": "Range, domain, integral, trigonometric functions, symmetry, odd function, tan.  <p><img src=\"/database/db/18/18-S2-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2018 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/18/18-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/18/18-S2.tex\"></a></p> "
},
{
 "tags": ["Trigonometric equations"],
 "question_id":18204,
 "title": "18-S2-Q4",
 "body": "Trigonometric equations, angle addition, roots.  <p><img src=\"/database/db/18/18-S2-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2018 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/18/18-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/18/18-S2.tex\"></a></p> "
},
{
 "tags": ["Integration of series"],
 "question_id":18205,
 "title": "18-S2-Q5",
 "body": "Series, Taylor, integration, binomial expansion.  <p><img src=\"/database/db/18/18-S2-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2018 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/18/18-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/18/18-S2.tex\"></a></p> "
},
{
 "tags": ["Factorial equations"],
 "question_id":18206,
 "title": "18-S2-Q6",
 "body": "Number theory, primes, factorial, integers, diophantine.  <p><img src=\"/database/db/18/18-S2-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2018 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/18/18-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/18/18-S2.tex\"></a></p> "
},
{
 "tags": ["Triangle intersection"],
 "question_id":18207,
 "title": "18-S2-Q7",
 "body": "Triangle, intersection, ratio, lengths, Euclidean geometry.  <p><img src=\"/database/db/18/18-S2-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2018 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/18/18-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/18/18-S2.tex\"></a></p> "
},
{
 "tags": ["Differential equations"],
 "question_id":18208,
 "title": "18-S2-Q8",
 "body": "Differential equation, square root, curve sketching, substitution.  <p><img src=\"/database/db/18/18-S2-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2018 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/18/18-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/18/18-S2.tex\"></a></p> "
},
{
 "tags": ["Beads on wire"],
 "question_id":18209,
 "title": "18-S2-Q9",
 "body": "Beads, wire, collisions, coefficient of restitution, bounce.  <p><img src=\"/database/db/18/18-S2-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2018 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/18/18-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/18/18-S2.tex\"></a></p> "
},
{
 "tags": ["Ant on elastic string"],
 "question_id":18210,
 "title": "18-S2-Q10",
 "body": "Elastic string, ant, equation of motion.  <p><img src=\"/database/db/18/18-S2-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2018 Question 10 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/18/18-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/18/18-S2.tex\"></a></p> "
},
{
 "tags": ["Motorbike slipping"],
 "question_id":18211,
 "title": "18-S2-Q11",
 "body": "Motorbike, wheelie, moments, slipping, maximum, acceleration.  <p><img src=\"/database/db/18/18-S2-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2018 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/18/18-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/18/18-S2.tex\"></a></p> "
},
{
 "tags": ["Coin toss game"],
 "question_id":18212,
 "title": "18-S2-Q12",
 "body": "Coin, toss, game, probability, expectation, winnings.   <p><img src=\"/database/db/18/18-S2-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2018 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/18/18-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/18/18-S2.tex\"></a></p> "
},
{
 "tags": ["Pass the parcel"],
 "question_id":18213,
 "title": "18-S2-Q13",
 "body": "pass the parcel, probability, Markov, recurrence.  <p><img src=\"/database/db/18/18-S2-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP II 2018 Question 13 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/18/18-S2.pdf\"></a><a class=\"linktex\" href=\"/database/db/18/18-S2.tex\"></a></p> "
},
{
 "tags": ["Quadratic roots inequalities"],
 "question_id":18301,
 "title": "18-S3-Q1",
 "body": "Curve sketcing, inequalities, Vieta, roots, quadratics, stationary points, maximum.  <p><img src=\"/database/db/18/18-S3-Q1.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2018 Question 1 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/18/18-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/18/18-S3.tex\"></a></p> "
},
{
 "tags": ["Hermite polynomials"],
 "question_id":18302,
 "title": "18-S3-Q2",
 "body": "Hermite, differentiation, recurrence, Fibonacci, polynomials.   <p><img src=\"/database/db/18/18-S3-Q2.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2018 Question 2 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/18/18-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/18/18-S3.tex\"></a></p> "
},
{
 "tags": ["Second order differential equation"],
 "question_id":18303,
 "title": "18-S3-Q3",
 "body": "Sturm-Liouville, second order, 2nd order, differential equation.  <p><img src=\"/database/db/18/18-S3-Q3.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2018 Question 3 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/18/18-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/18/18-S3.tex\"></a></p> "
},
{
 "tags": ["Tangent to hyperbola"],
 "question_id":18304,
 "title": "18-S3-Q4",
 "body": "Hyperbola, tangent, geometry, coordinate geometry, conic sections.  <p><img src=\"/database/db/18/18-S3-Q4.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2018 Question 4 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/18/18-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/18/18-S3.tex\"></a></p> "
},
{
 "tags": ["Arithmetic mean - geometric mean"],
 "question_id":18305,
 "title": "18-S3-Q5",
 "body": "arithmetic mean, geometric mean, inequality, induction.  <p><img src=\"/database/db/18/18-S3-Q5.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2018 Question 5 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/18/18-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/18/18-S3.tex\"></a></p> "
},
{
 "tags": ["Complex geometry"],
 "question_id":18306,
 "title": "18-S3-Q6",
 "body": "Complex numbers, Argand, geometry, circle, intersecting lines, intersection.  <p><img src=\"/database/db/18/18-S3-Q6.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2018 Question 6 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/18/18-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/18/18-S3.tex\"></a></p> "
},
{
 "tags": ["Basel series"],
 "question_id":18307,
 "title": "18-S3-Q7",
 "body": "Complex numbers, De Moivre, binomial expansion, cotangent.  <p><img src=\"/database/db/18/18-S3-Q7.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2018 Question 7 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/18/18-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/18/18-S3.tex\"></a></p> "
},
{
 "tags": ["Integrating fractional part"],
 "question_id":18308,
 "title": "18-S3-Q8",
 "body": "Integration, by substitution, periodic, fractional part.  <p><img src=\"/database/db/18/18-S3-Q8.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2018 Question 8 (Pure)]</b><p><a class=\"linkpdf\" href=\"/database/db/18/18-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/18/18-S3.tex\"></a></p> "
},
{
 "tags": ["Particle bouncing"],
 "question_id":18309,
 "title": "18-S3-Q9",
 "body": "Collisions, particle, coefficient of restitution, recurrence relation, wall.  <p><img src=\"/database/db/18/18-S3-Q9.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2018 Question 9 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/18/18-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/18/18-S3.tex\"></a></p> "
},
{
 "tags": ["Oscillating disc with point mass"],
 "question_id":18310,
 "title": "18-S3-Q10",
 "body": "Moment, inertia, disc, particle, mass, rotation, rotate, oscillation, energy, equation of motion, linearised equation.  <p><img src=\"/database/db/18/18-S3-Q10.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2018 Question 10 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/18/18-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/18/18-S3.tex\"></a></p> "
},
{
 "tags": ["Slack pendulum"],
 "question_id":18311,
 "title": "18-S3-Q11",
 "body": "Circular motion, string, particle, mass, inextensible string, taut, tension, instantaneous, instantaneously, rest.  <p><img src=\"/database/db/18/18-S3-Q11.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2018 Question 11 (Mechanics)]</b><p><a class=\"linkpdf\" href=\"/database/db/18/18-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/18/18-S3.tex\"></a></p> "
},
{
 "tags": ["Ordering samples"],
 "question_id":18312,
 "title": "18-S3-Q12",
 "body": "Random variable, uniform distribution, minimum, smallest, binomial expansion, probability density function, order, samples.  <p><img src=\"/database/db/18/18-S3-Q12.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2018 Question 12 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/18/18-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/18/18-S3.tex\"></a></p> "
},
{
 "tags": ["Poisson distribution"],
 "question_id":18313,
 "title": "18-S3-Q13",
 "body": "PGF, probability generating functino, Poisson distribution, expectation, inequality, discrete random variable.  <p><img src=\"/database/db/18/18-S3-Q13.png\" alt=\"q\" width=\"720\"></p><b>[STEP III 2018 Question 13 (Probability and Statistics)]</b><p><a class=\"linkpdf\" href=\"/database/db/18/18-S3.pdf\"></a><a class=\"linktex\" href=\"/database/db/18/18-S3.tex\"></a></p> "
}
]
}

