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 1121: If the scores of 3 students in a test are 5, 6 and 7, find the standard deviation of their scores Options:
  A) $\frac{2}{3}$
  B) $\frac{2}{3}\sqrt{3}$
  C) $\sqrt{\frac{2}{3}}$
  D) $\sqrt{\frac{3}{2}}$
  Show Answer
  The correct answer is C .
• Question 1122: A bag contains 5 black, 4 white and x red marbles. If the probability of picking a red marble is ²/₃, find the value of x Options:
  A) 8
  B) 10
  C) 4
  D) 6
  Show Answer
  The correct answer is D .
• Question 1123: If p and q are two non zero numbers and 18(p+q) = 918+p)q, which of the following must be true?
  Options:
  A) q = 18
  B) p <1
  C) p = 18
  D) q < 1
  Show Answer
  The correct answer is A .
• Question 1124: Find the area of the curved surface of a cone whose base radius is 3cm and whose height is 4cm (π = 3.14) Options:
  A) 17.1cm²
  B) 27.2cm²
  C) 47.1cm²
  D) 37.3cm²
  Show Answer
  The correct answer is C .
• Question 1125:

  $\begin{array}{cccccc}\text{Class Intervals}& 0-2& 3-5& 6-8& 9-11& \\ \text{Frequency}& 3& 2& 5& 3& \end{array}$

  Find the mode of the above distribution.

  Options:
  A) 9
  B) 8
  C) 10
  D) 7
  Show Answer
  The correct answer is D .
• Question 1126:

  

  The histogram above represents the weights of students who travelled out to their school for an examination. How many people made the trip.

  Options:
  A) 78
  B) 38
  C) 29
  D) 69
  Show Answer
  The correct answer is C .
• Question 1127: Find the angle subtended at the centre of a circle by a chord which is equal in length to the radius of the circle Options:
  A) 30^o
  B) 45^o
  C) 60^o
  D) 90^o
  Show Answer
  The correct answer is C .
• Question 1128: Calculate the logarithm to base 9 of 3^-4 * 9² * (81)^-1 Options:
  A) 2
  B) zero
  C) -2
  D) -4
  Show Answer
  The correct answer is C .
• Question 1129: The model height and range of heights 1.35, 1.25, 1.35, 1.40, 1.35, 1.50, 1.35, 1.50, and 1.20 are m and r respectively. Find m+2r. Options:
  A) 1.35
  B) 1.65
  C) 1.95
  D) 3.00
  Show Answer
  The correct answer is C .
• Question 1130: Integrate $\frac{1-x}{x^3}$ with respect to x Options:
  A) $\frac{x-x^2}{x^4}$ + k
  B) $\frac{4}{x^4}-\frac{3+k}{x^3}$
  C) $\frac{1}{x}-\frac{1}{2x^2}$ + k
  D) $\frac{1}{3x^2}-\frac{1}{2x}$ + k
  Show Answer
  The correct answer is C .