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 721: Simplify $\frac{324-4x^2}{2x+18}$ Options:
  A) 2(x - 9)
  B) 2(9 + x)
  C) 81 - x²
  D) -2(x - 9)
  Show Answer
  The correct answer is D .
• Question 722:

  Determine the value of ${\int }_0^{\frac{\pi }{2}}(-2cosx)dx$

  Options:
  A) -2
  B) -¹/₂
  C) -3
  D) -³/₂
  Show Answer
  The correct answer is A .
• Question 723:

  

  Triangle SPT is the solution of the linear inequalities

  Options:
  A) 2y - x - 2 ≤ 0, y + 2x + 2 ≥ 0, -2 ≤ x ≤ - 1
  B) -2 ≤ x ≤ 2, y ≥ 0, y + 2x + 2 ≤ 0, x ≤ 0
  C) 2y - x - 2 ≤ 0, y + 2x + 2 ≤ 0, y ≥ 0, x ≤ 0
  D) 2y - x - 2 ≥ 0, y + 2x + 2 ≤ 0, x ≤ 0
  Show Answer
  The correct answer is A .
• Question 724:

  This table below gives the scores of a group of students in a Further Mathematics Test.

  Score	1	2	3	4	5	6	7
  Frequency	4	6	8	4	10	6	2

  Find the mode of the distribution.

  Options:
  A) 7
  B) 10
  C) 5
  D) 4
  Show Answer
  The correct answer is C .
• Question 725: If the heights of two circular cylinder are in the ratio 2 : 3 and their volumes? Options:
  A) 27 : 32
  B) 27 : 23
  C) 23 : 32
  D) 27 : 23
  Show Answer
  The correct answer is A .
• Question 726: Find the values of x which satisfy the equation 16^x - 5 x 4^x + 4 = 0 Options:
  A) 1 and 4
  B) -2 and 2
  C) 0 and 1
  D) -1 and 0
  Show Answer
  The correct answer is C .
• Question 727: The ratio of the areas of similar triangles is necessarily equal to Options:
  A) the ratio of the corresponding sides
  B) the ratio of the squares on corresponsing sides
  C) the ratio of the corresponding heights of the triangles
  D) half the ratio of the corresponding heights of the triangles
  E) the ratio of the corresponding bases to the heights of the triangles
  Show Answer
  The correct answer is C .
• Question 728:
  

  Use the quadratic equation curve to answer this question.

  What is the 80th percentile?

  Options:
  A) -5.3
  B) 0.5
  C) 3
  D) 8
  Show Answer
  The correct answer is A .
• Question 729:

  Find the area bounded by the curve y = 3x² - 2x + 1, the ordinates x = 1 and x = 3 and the x-axix.

  Options:
  A) 24
  B) 22
  C) 21
  D) 20
  Show Answer
  The correct answer is D .
• Question 730:

  Given the matrix $A=\left|\begin{array}{cc}3& -2\\ 1& 6\end{array}\right|$. Find the inverse of matrix A.

  Options:
  A) $\left|\begin{array}{cc}6& 2\\ 1& 6\end{array}\right|$
  B) $\left|\begin{array}{cc}\frac{2}{11}& \frac{1}{12}\\ \frac{3}{20}& \frac{1}{10}\end{array}\right|$
  C) $\left|\begin{array}{cc}-3& 2\\ -1& -6\end{array}\right|$
  D) $\left|\begin{array}{cc}\frac{3}{10}& \frac{1}{10}\\ \frac{-1}{20}& \frac{3}{20}\end{array}\right|$
  Show Answer
  The correct answer is D .