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 2091: Find the mean deviation of 20, 25, 21, 27, 28, 29, to the nearest whole number Options:
  A) 2
  B) 3
  C) 4
  D) 5
  E) 6
  Show Answer
  The correct answer is B .
• Question 2092:

  Find the area of a regular hexagon inscribed in a circle of radius 8cm

  Options:
  A) 16$\sqrt{3}$ cm²
  B) 96$\sqrt{3}$ cm²
  C) 192$\sqrt{3}$ cm²
  D) 16$\sqrt{3}$ cm²
  E) 33cm²
  Show Answer
  The correct answer is B .
• Question 2093: Find the sum of the first 18 terms of the series 3, 6, 9,..., 36. Options:
  A) 505
  B) 513
  C) 433
  D) 635
  Show Answer
  The correct answer is B .
• Question 2094: The ratio of the base area of a hollow cone to that of its curved surface is 1:4. If its base radius is 7cm, calculate the slant height of the cone Options:
  A) 7cm
  B) 22cm
  C) 28cm
  D) 49cm
  E) 154cm
  Show Answer
  The correct answer is C .
• Question 2095: A solid sphere of radius 3cm, a solid right cone of radius 3cm and height 12cm and a solid right circular cycular of radius 3cm and height 4cm.Which of the following statements is true? Options:
  A) the volume of the sphere is greater than the volume of the cone
  B) the volume of the cone is less than the volume of the cylinder
  C) the total surface area of the cone is greater than that of the sphere
  D) The total surface area of the cylinder is less than that of the sphere
  E) the total sufeac area of the cone is equal to that of the cylinder
  Show Answer
  The correct answer is C .
• Question 2096:

  Find the average of the first four prime numbers greater than 10

  Options:
  A) 20
  B) 19
  C) 17
  D) 15
  Show Answer
  The correct answer is D .
• Question 2097: simplify ${16}^{\frac{-1}{2}}\times 4^{\frac{-1}{2}}\times {27}^{\frac{1}{3}}$ Options:
  A) ³/₈
  B) ²/₃
  C) ³/₄
  D) ³/₂
  Show Answer
  The correct answer is A .
• Question 2098: Simplify $\sqrt{\frac{(0.0023\ast 750)}{(0.00345\ast 1.25)}}$ Options:
  A) 15
  B) 20
  C) 40
  D) 75
  Show Answer
  The correct answer is B .
• Question 2099:

  Find x if the mean of 2x, 4x, 2x -13 and 6x is 4.

  Options:
  A) 1.5
  B) 2.0
  C) 1.0
  D) 0.5
  Show Answer
  The correct answer is B .
• Question 2100:

  Factorize 2t² + t - 15

  Options:
  A) (t + 3)(2t - 5)
  B) (2t + 3)(t - 5)
  C) (2t - 3)(t + 5)
  D) (t + 3)(t - 5)
  Show Answer
  The correct answer is A .