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 21: Simplify $\frac{3}{2x-1}$ + $\frac{2-x}{x-2}$ Options:
  A) $\frac{2-x}{(2x-1)(x-2)}$
  B) $\frac{5-x}{(2x-1)(x-2)}$
  C) $\frac{4-2x}{2x-1}$
  D) $\frac{6-3x}{(2x-1)(x-2)}$
  Show Answer
  The correct answer is C .
• Question 22: If $\frac{1}{p}$ = $\frac{a^2+2ab+b^2}{a-b}$ and $\frac{l}{q}$ = $\frac{a+b}{a^2-2ab+b^2}$ Find $\frac{p}{q}$ Options:
  A) $\frac{a+b}{a-b}$
  B) $\frac{1}{a^2-b^2}$
  C) $\frac{a-b}{a+b}$
  D) a² - b²
  Show Answer
  The correct answer is B .
• Question 23:

  $\begin{array}{cccccc}x& 1& 2& 3& 4& 5\\ f& 2& 1& 2& 1& 2\end{array}$

  Find the variance of the frequency distribution above

  Options:
  A) $\frac{3}{2}$
  B) $\frac{9}{4}$
  C) $\frac{5}{2}$
  D) 3
  Show Answer
  The correct answer is B .
• Question 24:

  $\begin{array}{ccccccccc}Scores(x)& 0& 1& 2& 3& 4& 5& 6& 7\\ Frequency(f)& 7& 11& 6& 7& 7& 5& 3\end{array}$

  In the distribution above, the mode and median respectively are

  Options:
  A) 1,3
  B) 1, 2
  C) 3, 3
  D) 0, 2
  Show Answer
  The correct answer is B .
• Question 25:

  Solve for k in the equation ${\frac{1}{8}}^{k+2}$ = 1

  Options:
  A) 2
  B) -4
  C) -2
  D) 4
  Show Answer
  The correct answer is C .
• Question 26:

  

  From the cyclic quadrilateral above, find < TVS

  Options:
  A) 60^o
  B) 80^o
  C) 70^o
  D) 50^o
  Show Answer
  The correct answer is B .
• Question 27:

  If a = $\frac{2x}{1-x}$ and b = $\frac{1+x}{1-x}$, then a² - b² in the simplest form is

  Options:
  A) $\frac{3x+1}{1-x}$
  B) $\frac{3x^2-1}{(x-1{)}^2}$
  C) $\frac{3x-2}{1-x}$
  D) $\frac{3x^2-1}{(x-1)}$
  Show Answer
  The correct answer is A .
• Question 28: simplify $\frac{\frac{7}{9}-\frac{2}{3}}{\frac{1}{3}+\frac{\frac{2}{5}}{\frac{4}{5}}}$ Options:
  A) $\frac{11}{12}$
  B) $\frac{5}{6}$
  C) $\frac{1}{5}$
  D) $\frac{2}{15}$
  Show Answer
  The correct answer is D .
• Question 29: If a rod 10cm in length was measured as 10.5cm, calculate the percentage error Options:
  A) 5%
  B) 10%
  C) 8%
  D) 7%
  Show Answer
  The correct answer is A .
• Question 30:

  The number of goals scored by a football team in 20 matches is shown below:

  $\begin{array}{ccccccc}\text{No. of goals}& 0& 1& 2& 3& 4& 5\\ \text{No. of matches}& 3& 5& 7& 3& 1& 0\end{array}$

  What are the values of the mean and the mode respectively?

  Options:
  A) (1.75, 5)
  B) (1.75, 2)
  C) (1.75, 1)
  D) (65, 74)
  Show Answer
  The correct answer is B .