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 981: Find the length of a side of a rhombus whose diagonals are 6cm and 8cm Options:
  A) 8cm
  B) 5cm
  C) 4cm
  D) 3cm
  Show Answer
  The correct answer is B .
• Question 982: Evaluate ∫sec²θ dθ Options:
  A) sec θ tan θ + k
  B) tan θ + k
  C) 2sec θ + k
  D) sec θ + k
  Show Answer
  The correct answer is B .
• Question 983: If the sum of the 8th and 9th terms of an arithmetic progression is 72 and the 4th term is -6, find the common difference Options:
  A) 4
  B) 8
  C) 6$\frac{2}{3}$
  D) 9$\frac{1}{3}$
  Show Answer
  The correct answer is D .
• Question 984: 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 985: (3.2)² - (1.8)² equals Options:
  A) 7.0
  B) 2.56
  C) 13.48
  D) 2.0
  E) 0.07
  Show Answer
  The correct answer is A .
• Question 986:

  4, 16, 30, 20, 10, 14 and 26 are represented on a pie chart. Find the sum of the angles of the bisectors representing all numbers equals to or greater than 16.

  Options:
  A) 48^o
  B) 84^o
  C) 92^o
  D) 276^o
  Show Answer
  The correct answer is D .
• Question 987:

  

  In the figure, AB is parallel to CD then x + y + z is

  Options:
  A) 185${}^{\circ }$
  B) 200${}^{\circ }$
  C) 270${}^{\circ }$
  D) 360${}^{\circ }$
  E) 195${}^{\circ }$
  Show Answer
  The correct answer is D .
• Question 988: Simplify ($\sqrt{2}+\frac{1}{\sqrt{3}})(\sqrt{2}-\frac{1}{\sqrt{3}}$) Options:
  A) $\frac{7}{3}$
  B) $\frac{5}{3}$
  C) $\frac{5}{2}$
  D) $\frac{3}{2}$
  Show Answer
  The correct answer is B .
• Question 989: A pipe made of metal 10cm thick has an external radius of 11cm. find the area of metal in making 2.4cm of pipe Options:
  A) 21πcm²
  B) 21πcm²
  C) 15πcm²
  D) 17πcm²
  Show Answer
  The correct answer is B .
• Question 990:

  Given matrix M = $\left|\begin{array}{ccc}-2& 0& 4\\ 0& -1& 6\\ 5& 6& 3\end{array}\right|$, find $M^T+2M$

  Options:
  A) $\left|\begin{array}{ccc}-4& 2& 1\\ 6& 0& 5\\ 0& 6& 2\end{array}\right|$
  B) $\left|\begin{array}{ccc}-6& 0& 13\\ 0& -3& 18\\ 14& 18& 9\end{array}\right|$
  C) $\left|\begin{array}{ccc}5& 2& 6\\ 0& 1& 1\\ 3& 4& -7\end{array}\right|$
  D) $\left|\begin{array}{ccc}-4& 0& 8\\ 0& -2& -16\\ 10& 12& 6\end{array}\right|$
  Show Answer
  The correct answer is B .