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 81:

  

  The pie chart above shows the statistical distribution of 80 students in five subjects in an examination. Calculate how many student offer Mathematics.

  Options:
  A) 30
  B) 11
  C) 50
  D) 20
  Show Answer
  The correct answer is B .
• Question 82: PQR is the diagram of a semicircle RSP with centre at Q and radius of length 3.5cm. If QPT = 60^o. Find the perimeter of the figure PTRS. $\pi$ = $\frac{22}{7}$ Options:
  A) 25cm
  B) 18cm
  C) 36cm
  D) 29cm
  E) 25.5cm
  Show Answer
  The correct answer is A .
• Question 83: What is the probability that an integer x $(1\le x\le 25)$ chosen at random is divisible by both 2 and 3? Options:
  A) $\frac{1}{25}$
  B) $\frac{1}{5}$
  C) $\frac{4}{25}$
  D) $\frac{3}{4}$
  Show Answer
  The correct answer is C .
• Question 84:

  The result of rolling a fair die 150 times is as summarized in the table given.

  $\begin{array}{ccccccc}\text{Number}& 1& 2& 3& 4& 5& 6\\ \text{Frequency}& 12& 18& x& 30& 2x& 45\end{array}$

  What is the probability of obtaining a 5?

  Options:
  A) $\frac{3}{10}$
  B) $\frac{1}{5}$
  C) $\frac{1}{6}$
  D) $\frac{1}{10}$
  Show Answer
  The correct answer is B .
• Question 85: Simplify $\frac{x-7}{x^2-9}$ x $\frac{x^2-3x}{x^2-49}$ Options:
  A) $\frac{x}{(x-3)(x-7)}$
  B) $\frac{x}{(x+3)(x-7)}$
  C) $\frac{x}{(x+3)(x+7)}$
  D) $\frac{x}{(x-3)(x+7)}$
  Show Answer
  The correct answer is C .
• Question 86:

  Calculate the perimeter of a sector of a circle of radius 9cm and angle 36^o.

  Options:
  A) 18cm
  B) (18 + $\frac{9\pi }{5}$)cm
  C) (9 + $\frac{9\pi }{5}$)cm
  D) $\frac{9\pi }{5}$cm
  Show Answer
  The correct answer is B .
• Question 87: Find the sum of the 20 term in an arithmetic progression whose first term is 7 and last term is 117 Options:
  A) 2480
  B) 1240
  C) 620
  D) 124
  Show Answer
  The correct answer is B .
• Question 88: The perpendicular bisector of a line XY is the locus of a point B. whose distance from Y is always twice its distance from X. C Options:
  A) whose distance from X is always twice its distance from Y
  B) whose distance from Y is always twice its distance from X.
  C) which moves on the line XY
  D) which is equidistant from the points X and y
  Show Answer
  The correct answer is D .
• Question 89: A man 40m from the foot of a tower observes the angle of elevation of the tower to be 30^o, Determine the height of the tower Options:
  A) 40m
  B) 40$\sqrt{3}$m
  C) 20m
  D) $\frac{40\sqrt{3}}{3}$
  Show Answer
  The correct answer is D .
• Question 90: An arc of a circle of radius 6cm is 8cm long. Find the area of the sector Options:
  A) 5$\frac{1}{3}$cm²
  B) 24cm²
  C) 36cm²
  D) 84cm²
  Show Answer
  The correct answer is B .