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 1471: The 4th term of an A.P. is 13 while the 10th term is 31. Find the 21st term. Options:
  A) 175
  B) 85
  C) 64
  D) 45
  Show Answer
  The correct answer is C .
• Question 1472: Differentiate $\frac{x}{cosx}$ with respect to x Options:
  A) 1 + x sec x tan x
  B) 1 + sec² x
  C) cos x + x tan x
  D) x sec x tan x + secx
  Show Answer
  The correct answer is D .
• Question 1473: In how many ways can a student select 2 subjects from 5 subjects? Options:
  A) $\frac{5!}{3!}$
  B) $\frac{5!}{2!2!}$
  C) $\frac{5!}{2!3!}$
  D) $\frac{5!}{2!}$
  Show Answer
  The correct answer is C .
• Question 1474: A triangle has angles 30${}^{\circ }$, 15${}^{\circ }$ and 135${}^{\circ }$. The side opposite to the angle 30${}^{\circ }$ is length 6cm. The side opposite to the angle 135${}^{\circ }$ is equal to Options:
  A) 12cm
  B) 6cm
  C) 6$\sqrt{2}$cm
  D) 12$\sqrt{2}$cm
  Show Answer
  The correct answer is C .
• Question 1475: If y = x sin x, Find $\frac{d^{2}y}{d^{2}x}$ Options:
  A) 2 cosx - x - x sinx
  B) sinx + x cosx
  C) sinx - x cosx
  D) x sinx - 2 cosx
  Show Answer
  The correct answer is A .
• Question 1476: The operation * on the set R of real number is defined by x * y = 3x + 2y − 1, find 3* − 1 Options:
  A) 9
  B) - 9
  C) 6
  D) - 6
  Show Answer
  The correct answer is C .
• Question 1477: S_n is the sum of the first n terms of a series given by S_n = n₂n - 1. Find the nth term Options:
  A) 4n + 1
  B) 4n - 1
  C) 2n + 1
  D) 2n - 1
  Show Answer
  The correct answer is D .
• Question 1478: Find the minimum value of the function y = x(1+x) Options:
  A) -¹/₄
  B) -¹/₂
  C) ¹/₄
  D) ¹/₂
  Show Answer
  The correct answer is A .
• Question 1479: Three teachers shared a packet of chalk. The first teacher got 2/5 of the chalk and the second teacher received 2/15 of the remainder. What fraction the the third teacher receive? Options:
  A) 8/15
  B) 11/25
  C) 12/25
  D) 13/25
  Show Answer
  The correct answer is D .
• Question 1480: If the exterior angles of a pentagon are x^o, (x + 5)^o, (x + 10), (x + 15)^o and (x + 20)^o, find x Options:
  A) 118^o
  B) 72^o
  C) 62^o
  D) 36^o
  Show Answer
  The correct answer is C .