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 1721: Find the simple interest on ₦325 in 5years at 3% per annum. Options:
  A) ₦48.75K
  B) ₦50.10K
  C) ₦75.50K
  D) ₦15.75K
  Show Answer
  The correct answer is A .
• Question 1722: Find at which rate per annum simple interest ₦525 will amount to ₦588 in 3 years. Options:
  A) 3%
  B) 2%
  C) 5%
  D) 4%
  Show Answer
  The correct answer is D .
• Question 1723: Find the variance of 2, 6, 8, 6, 2 and 6 Options:
  A) 6
  B) 5
  C) √6
  D) √5
  Show Answer
  The correct answer is B .
• Question 1724:

  If A =$\left(\begin{array}{cc}2& 1\\ 2& 3\\ 1& 2\end{array}\right)$ and B =$\left(\begin{array}{cc}3& 2\\ 4& 2\end{array}\right)$. Find AB

  Options:
  A) $\left(\begin{array}{cc}18& 6\\ 12& 10\\ 10& 6\end{array}\right)$
  B) $\left(\begin{array}{cc}10& 6\\ 13& 10\\ 12& 6\end{array}\right)$
  C) $\left(\begin{array}{cc}10& 6\\ 12& 10\\ 11& 6\end{array}\right)$
  D) $\left(\begin{array}{cc}10& 6\\ 18& 10\\ 11& 6\end{array}\right)$
  Show Answer
  The correct answer is D .
• Question 1725: If p + 1, 2P - 10, 1 - 4p²are three consecutive terms of an arithmetic progression, find the possible values of p Options:
  A) -4, 2
  B) -3, $\frac{4}{11}$
  C) -$\frac{4}{11}$, 2
  D) 5, -3
  Show Answer
  The correct answer is C .
• Question 1726: For the set of numbers 2, 3, 5, 6, 7, 7, 8 Options:
  A) The median is greater than the mode
  B) the mean is greater than the mode
  C) the mean is greater than the median
  D) the median is equal to the mean
  E) the mean is less than the median
  Show Answer
  The correct answer is E .
• Question 1727:

  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 1728:

  The coordinates of the mid-point of the line joining the points (-3,5) and (2,10) is given by?

  Options:
  A) ( $\frac{1}{2}$, $\frac{15}{2}$ )
  B) ( $\frac{1}{2}$, $\frac{-15}{2}$ )
  C) ( $\frac{-1}{2}$, $\frac{-15}{2}$ )
  D) ( $\frac{-1}{2}$, $\frac{15}{2}$ )
  Show Answer
  The correct answer is D .
• Question 1729: x varies directly as y and inversely as z. when x = 5, y = 2 and z = 1. What is the value of x when y = 5 and z = 2? Options:
  A) 2.5
  B) 5
  C) 6.25
  D) 6.52
  E) 7.5
  Show Answer
  The correct answer is C .
• Question 1730: 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 .