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 2521: If x + $\frac{1}{x}$ = 4, find x² + $\frac{1}{x^2}$ Options:
  A) 16
  B) 14
  C) 12
  D) 9
  Show Answer
  The correct answer is B .
• Question 2522: $\left(\begin{array}{cc}-2& 1\\ 2& 3\end{array}\right)$ + $\left(\begin{array}{cc}p& q\\ r& s\end{array}\right)$ = $\left(\begin{array}{cc}1& 0\\ 0& 1\end{array}\right)$. What is the value of r? Options:
  A) -$\frac{1}{8}$
  B) $\frac{3}{8}$
  C) $\frac{5}{8}$
  D) $\frac{1}{4}$
  Show Answer
  The correct answer is D .
• Question 2523:

  p = $\left|\begin{array}{ccc}x& 3& 0\\ 2& y& 3\\ 4& 2& 4\end{array}\right|$

  q = $\left|\begin{array}{ccc}x& 2& z\\ 3& y& 2\\ 0& 3& z\end{array}\right|$ Where p^T is the transpose p calculate /p^T/ when x = 0, y = 1 and z = 2

  Options:
  A) 48
  B) 24
  C) -24
  D) -48
  Show Answer
  The correct answer is B .
• Question 2524:

  The angle of a sector of a circle radius 10.5 cm is 48${}^o$. Calculate the perimeter of the sector.

  Options:
  A) 25.4cm
  B) 25.4cm
  C) 25.6cm
  D) 29.8cm
  Show Answer
  The correct answer is D .
• Question 2525:

  In how many ways can 2 students be selected from a group of 5 students in a debating competition?

  Options:
  A) 25 ways
  B) 10 ways
  C) 15 ways
  D) 20 ways
  Show Answer
  The correct answer is B .
• Question 2526: Twenty girls and y boys sat on an examination. The mean marks obtained by the girls and boys were 52 and 57 respectively. if the total score for both girls and boys was 2950, find y. Options:
  A) 51
  B) 48
  C) 30
  D) 25
  E) 18
  Show Answer
  The correct answer is C .
• Question 2527:

  

  In the figure, a solid consists of a hemisphere surmounted by a right circular cone, with radius 3.0cm and height 6.0cm. Find the volume of the solid

  Options:
  A) 36$\pi$cm ³
  B) 54$\pi$cm ²
  C) 18$\pi$cm ²
  D) 108$\pi$cm ²
  Show Answer
  The correct answer is A .
• Question 2528:

  

  In the diagram, HK is parallel to QR, PH = 4cm and HQ = 3cm. What is the ratio of KR:PR?

  Options:
  A) 7:3
  B) 3:7
  C) 3:4
  D) 4:3
  Show Answer
  The correct answer is B .
• Question 2529: Evaluate ${\int }_1^2$(6x² - 2x)dx Options:
  A) 16
  B) 13
  C) 12
  D) 11
  Show Answer
  The correct answer is D .
• Question 2530:

  If (x - a) is a factor of bx - ax + x², find the other factor.

  Options:
  A) (x + b)
  B) (x - b)
  C) (a + b)
  D) (a - b)
  Show Answer
  The correct answer is A .