Mathematics Exam Past Questions and Answers | JAMB, WAEC and NECO

Mathematics looks at measurement, relationships, and properties of numbers and groups using numbers and symbols. Important topics in math include arithmetic, algebra, geometry, and calculus.

• Question 1481:

  Find the length of a chord 3cm from the centre of a circle of radius 5cm

  Options:
  A) 8cm
  B) 5.6cm
  C) 7cm
  D) 6.5cm
  Show Answer
  The correct answer is A .
• Question 1482: What is the probability that an integer x $(1\le x\le 25)$ chosen at random is divisible by both 2 and 3? Options:
  A) $\frac{1}{25}$
  B) $\frac{1}{5}$
  C) $\frac{4}{25}$
  D) $\frac{3}{4}$
  Show Answer
  The correct answer is C .
• Question 1483: Differentiate (x² - ¹/_x)² with respect to x Options:
  A) 4x² - 4x - ²/_x
  B) 4x² - 2 + ²/_x³
  C) 4x² - 2 - ²/_x³
  D) 4x² - 3x + ²/_x
  Show Answer
  The correct answer is C .
• Question 1484: If sin $\theta$ = $\frac{3}{5}$, find tan $\theta$ Options:
  A) $\frac{3}{4}$
  B) $\frac{3}{5}$
  C) $\frac{2}{4}$
  D) $\frac{1}{4}$
  Show Answer
  The correct answer is A .
• Question 1485: At what value of x is the function x² + x + 1 minimum? Options:
  A) 1
  B) $\frac{3}{4}$
  C) $\frac{5}{3}$
  D) 9
  Show Answer
  The correct answer is A .
• Question 1486: x varies directly as y and inversely as z. when x = 5, y = 2 and z = 1. What is the value of x when y = 5 and z = 2? Options:
  A) 2.5
  B) 5
  C) 6.25
  D) 6.52
  E) 7.5
  Show Answer
  The correct answer is C .
• Question 1487: The solution of the quadratic equation bx² + cx + a = 0 is given by Options:
  A) x = b $\pm$ $\frac{\sqrt{b^2-4ac}}{2a}$
  B) x = c $\pm$ $\frac{\sqrt{b^2-4ab}}{2b}$
  C) x = -c $\pm$ $\frac{\sqrt{c^2-4ab}}{2b}$
  D) x = -b $\pm$ $\frac{\sqrt{b^2-4ac}}{2b}$
  Show Answer
  The correct answer is C .
• Question 1488:

  Evaluate log₇17

  Options:
  A) 1.35
  B) 1.353
  C) 1.455
  D) 0.455
  Show Answer
  The correct answer is C .
• Question 1489: If X = {n² + 1:n = 0,2,3} and Y = {n+1:n=2,3,5}, find X∩Y. Options:
  A) {1,3}
  B) {5,10}
  C) ∅
  D) {4,6}
  Show Answer
  The correct answer is C .
• Question 1490: Simplify T = $\frac{4R_2}{R_1^{-1}+R_2^{-1}+4R_3^{-1}}$ Options:
  A) $\frac{4R_1\times R_2{R}_3}{R_2{R}_3+R_1{R}_3+4R_1{R}_2}$
  B) $\frac{R_1{R}_2{R}_3}{R_2{R}_3+R_1{R}_2+4R_1{R}_2}$
  C) $\frac{16R_1{R}_2{R}_3}{R_2{R}_3+R_1{R}_2+R_1{R}_2}$
  D) $\frac{4R_1{R}_2{R}_3}{4R_2{R}_3+R_1{R}_2+4R_1{R}_2}$
  Show Answer
  The correct answer is A .