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 1901: What is the area between two concentric circles of diameters 26cm and 20cm? Options:
  A) 100$\pi$
  B) 169$\pi$
  C) 69$\pi$
  D) 9$\pi$
  E) 269$\pi$
  Show Answer
  The correct answer is C .
• Question 1902: 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 1903: How many three-digit numbers can be formed from 32564 without repeating any of the digits? Options:
  A) 120
  B) 10
  C) 20
  D) 60
  Show Answer
  The correct answer is D .
• Question 1904:

  If (x - a) is a factor of bx - ax + x², find the other factor.

  Options:
  A) (x + b)
  B) (x - b)
  C) (a + b)
  D) (a - b)
  Show Answer
  The correct answer is A .
• Question 1905:

  If $\sin x=\frac{4}{5}$, find $\frac{1+{\cot }^{2}x}{{\csc }^{2}x-1}$.

  Options:
  A) $\frac{13}{2}$
  B) $\frac{25}{9}$
  C) $\frac{3}{13}$
  D) $\frac{4}{11}$
  Show Answer
  The correct answer is B .
• Question 1906: Given that (3 - y) ÷ 2x = (6y + 7) ÷ (4x - 5), find the value of x when y = 2 Options:
  A) $\frac{64}{5}$
  B) 6
  C) $\frac{5}{34}$
  D) $\frac{-5}{34}$
  E) $\frac{-64}{5}$
  Show Answer
  The correct answer is D .
• Question 1907:

  Find the area of a triangle ABC such that a = 16cm, b = 14cm, c = 12cm, leave your answer in surd form

  Options:
  A) 5$\sqrt{15}$cm²
  B) 7$\sqrt{15}$cm²
  C) 21$\sqrt{3}$cm²
  D) 21$\sqrt{5}$cm²
  E) 21$\sqrt{15}$cm²
  Show Answer
  The correct answer is E .
• Question 1908: Find n if 34_n = 10011₂ Options:
  A) 5
  B) 6
  C) 7
  D) 8
  Show Answer
  The correct answer is A .
• Question 1909: Find the number of ways of selecting 6 out of 10 subjects for an examination Options:
  A) 128
  B) 216
  C) 215
  D) 210
  Show Answer
  The correct answer is D .
• Question 1910: Solve the following equation $\frac{2}{2r-1}$ - $\frac{5}{3}$ = $\frac{1}{r+2}$ Options:
  A) ($\frac{5}{2}$, 1)
  B) (5, -4)
  C) (2, 1)
  D) (1, $\frac{-5}{2}$)
  E) ($\frac{-5}{2}$, 1)
  Show Answer
  The correct answer is D .