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 1841:

  The population of a village decreased from 1,230 to 1,040 due to breakout of an epidemic. What is the percentage decrease in the population?

  Options:
  A) 15.44%
  B) 15.43%
  C) 15.42%
  D) 15.45%
  Show Answer
  The correct answer is D .
• Question 1842: The square base of a pyramid of side 3cm has height 8cm. If the pyramid is cut into two parts by a plane parallel to the base midway between the base and the vertex, the volumes of the two sections are Options:
  A) (21cm³, 3cm³)
  B) (24cm³, 3cm³)
  C) (24cm³, 21cm³)
  D) (72cm³, 9cm³)
  E) (63cm³, 9cm³)
  Show Answer
  The correct answer is B .
• Question 1843:

  A right circular cone has a base radius r cm and a vertical angle 2y^o. The height of the cone is

  Options:
  A) r tan y^o cm
  B) r sin y^o cm
  C) r cot y^o cm
  D) r cos y^o cm
  E) r cosec y^o cm
  Show Answer
  The correct answer is A .
• Question 1844:

  Find the equation of a line perpendicular to the line 4y = 7x + 3 which passes through (-3, 1)

  Options:
  A) 7y + 4x + 5 = 0
  B) 7y - 4x - 5 = 0
  C) 3y - 5x + 2 = 0
  D) 3y + 5x - 2 = 0
  Show Answer
  The correct answer is A .
• Question 1845: A circle with radius 5cm has its radius increasing at the rate of 0.2m/s. What will be the corresponding increase in the area? Options:
  A) 2π
  B) 5π
  C) π
  D) 4π
  Show Answer
  The correct answer is A .
• Question 1846:

  Find the gradient of the line joining the points (3, 2) and (1, 4).

  Options:
  A) 3/2
  B) 2/1
  C) -1
  D) 3/2
  Show Answer
  The correct answer is C .
• Question 1847: Find the equation of a line perpendicular to line 2y = 5x + 4 which passes through (4, 2). Options:
  A) 5y - 2x -18 = 0
  B) 5y + 2x - 18 = 0
  C) 5y - 2x + 18 = 0
  D) 5y + 2x - 2 = 0
  Show Answer
  The correct answer is B .
• Question 1848: A number is chosen at random from 10 to 30 both inclusive. What is the probability that the number is divisible by 3? Options:
  A) $\frac{2}{15}$
  B) $\frac{1}{10}$
  C) $\frac{1}{3}$
  D) $\frac{2}{5}$
  Show Answer
  The correct answer is C .
• Question 1849: A die has four of it's faces coloured white and the remaining two coloured black. What is the probability that when the die is thrown two consecutive time, the top face will be white in both cases? Options:
  A) $\frac{2}{3}$
  B) $\frac{1}{9}$
  C) $\frac{4}{9}$
  D) $\frac{1}{36}$
  Show Answer
  The correct answer is C .
• Question 1850: 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 .