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 1471: Given m = N$\frac{\sqrt{SL}}{T}$ make T the subject of the formula Options:
  A) $\frac{\text{NSL}}{M}$
  B) $\frac{N^{2}SL}{M^2}$
  C) $\frac{N^{2}SL}{M}$
  D) $\frac{NSL}{M^2}$
  Show Answer
  The correct answer is B .
• Question 1472:

  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 .
• Question 1473:

  

  Calculate the volume of the regular three-dimensional figure drawn above, where <ABC = 90° (a right-angled triangle).

  Options:
  A) 394 cm${}^3$
  B) 425 cm${}^3$
  C) 268 cm${}^3$
  D) 540 cm${}^3$
  Show Answer
  The correct answer is D .
• Question 1474: If the function f is defined by f(x + 2) = 2x² + 7x = 5, find f(-1) Options:
  A) -10
  B) -8
  C) 4
  D) 10
  Show Answer
  The correct answer is B .
• Question 1475:

  

  From the figure above, what is the value of p?

  Options:
  A) 135${}^{\circ }$
  B) 90${}^{\circ }$
  C) 60${}^{\circ }$
  D) 45${}^{\circ }$
  Show Answer
  The correct answer is B .
• Question 1476: Evaluate ${\int }_{\frac{-\pi }{2}}^{\frac{\pi }{2}}cosxdx$ Options:
  A) zero
  B) 1
  C) 2
  D) 3
  Show Answer
  The correct answer is C .
• Question 1477: A group of 14 children children received the following scores in a reading test: 35, 35, 26, 26, 26, 29, 29, 29, 12, 25, 25, 25, 25, 17. What was the median score. Options:
  A) 29
  B) 26
  C) 24
  D) 25
  E) 23
  Show Answer
  The correct answer is B .
• Question 1478:

  A binary operation $\otimes$ is defined by $m\otimes n=mn+m-n$ on the set of real numbers, for all m, n $\in$ R. Find the value of 3 $\otimes$ (2 $\otimes$ 4).

  Options:
  A) 6
  B) 25
  C) 15
  D) 18
  Show Answer
  The correct answer is C .
• Question 1479: The inverse of matrix N = $\left|\begin{array}{cc}2& 3\\ 1& 4\end{array}\right|$ is Options:
  A) $\frac{1}{5}$ $\left|\begin{array}{cc}2& 1\\ 3& 4\end{array}\right|$
  B) $\frac{1}{5}$ $\left|\begin{array}{cc}4& -3\\ -1& 2\end{array}\right|$
  C) $\frac{1}{5}$ $\left|\begin{array}{cc}2& -1\\ -3& 4\end{array}\right|$
  D) $\frac{1}{5}$ $\left|\begin{array}{cc}4& 3\\ 1& 2\end{array}\right|$
  Show Answer
  The correct answer is B .
• Question 1480:

  

  In the figure, WU//YZ, WY//YZ = 12cm, VZ = 6cm, XU = 8cm. Determine the length of WU.

  Options:
  A) 1cm
  B) 6cm
  C) 2cm
  D) 4cm
  E) 3cm
  Show Answer
  The correct answer is D .