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 1741:

  If sinθ = - $\frac{3}{5}$ andθ lies in the third quadrant, find cosθ

  Options:
  A) $\frac{4}{5}$
  B) - $\frac{5}{4}$
  C) $\frac{5}{4}$
  D) - $\frac{4}{5}$
  Show Answer
  The correct answer is D .
• Question 1742:

  A group of market women sell at least one of yam, plantain and maize. 12 of them sell maize, 10 sell yam and 14 sell plantain. 5 sell plantain and maize, 4 sell yam and maize, 2 sell yam and plantain only while 3 sell all the three items. How many women are in the group?

  Options:
  A) 25
  B) 19
  C) 18
  D) 17
  Show Answer
  The correct answer is A .
• Question 1743: If y = x sinx, find dy/dx when x = π/2. Options:
  A) -π/2
  B) -1
  C) 1
  D) π/2
  Show Answer
  The correct answer is C .
• Question 1744: if a = -3, b = 2, c = 4, evaluate $\frac{a^3-b^3-c^{\frac{1}{2}}}{b-a-c}$ Options:
  A) 37
  B) $\frac{-37}{5}$
  C) $\frac{37}{5}$
  D) -37
  Show Answer
  The correct answer is A .
• Question 1745: Simplify 1¼ ÷ (2 ÷ ¼ of 28) Options:
  A) 1 $\frac{3}{8}$
  B) 2 $\frac{3}{4}$
  C) 4 $\frac{3}{8}$
  D) 3 $\frac{1}{5}$
  Show Answer
  The correct answer is C .
• Question 1746: Find the rate of change of the volume, V of a sphere with respect to its radius, r when r = 1. Options:
  A) 12π
  B) 4π
  C) 24π
  D) 8π
  Show Answer
  The correct answer is B .
• Question 1747: Five years ago, a father was 3 times as old as his son, now their combined ages amount to 110years. thus, the present age of the father is Options:
  A) 75 years
  B) 60 years
  C) 98 years
  D) 80 years
  E) 105 years
  Show Answer
  The correct answer is D .
• Question 1748: In how many ways can 6coloured chalks be arranged if 2 are same colour? Options:
  A) 60
  B) 120
  C) 240
  D) 360
  Show Answer
  The correct answer is D .
• Question 1749:

  If P = [$\frac{Q(R-T)}{15}$] ${}^{\frac{1}{3}}$ make T the subject of the relation

  Options:
  A) T = $\frac{R+P^3}{15Q}$
  B) T = $\frac{R-15P^3}{Q}$
  C) T = $\frac{R-15P^3}{Q}$
  D) T = $\frac{15R-Q}{P^3}$
  Show Answer
  The correct answer is C .
• Question 1750:

  Integrate the expression 6x${}^2$ - 2x + 1

  Options:
  A) 3x${}^3$ - 2x${}^2$ + x + c
  B) 2x${}^3$ - x${}^2$ + x + c
  C) 2x${}^3$ – 3x${}^2$ + c
  D) x${}^3$ + x${}^2$ – x + c
  Show Answer
  The correct answer is B .