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: When a dealer sells a bicycle for ₦81 he makes a profit of 8%. What did he pay for the bicycle? Options:
  A) ₦73
  B) ₦74.52
  C) ₦75
  D) ₦75.52
  E) ₦87.48
  Show Answer
  The correct answer is C .
• Question 982:

  Express $16.54\times {10}^{-5}-6.76\times {10}^{-8}+0.23\times {10}^{-6}$ in standard form.

  Options:
  A) 1.66 x 10${}^{-4}$
  B) 1.66 x 10${}^{-5}$
  C) 1.65 x 10${}^{-5}$
  D) 1.65 x 10${}^{-4}$
  Show Answer
  The correct answer is A .
• Question 983: If the length of a square is increased by 20% while while its width is decreased by 20% to form a rectangle, what is the ratio of the area of the rectangle to the area of the square? Options:
  A) 6 : 5
  B) 25 : 24
  C) 5 : 6
  D) 24 : 25
  Show Answer
  The correct answer is D .
• Question 984: What is the n-th term of the sequence 2, 6, 12, 20...? Options:
  A) 4n - 2
  B) 2(3^{n - 1})
  C) n² + n
  D) n² + 3n + 2
  Show Answer
  The correct answer is C .
• Question 985: The three sides of an isosceles triangle are length of lengths (x + 3), (2x + 3), (2x - 3) respectively. Calculate x. Options:
  A) 5
  B) 1
  C) 3
  D) 6
  Show Answer
  The correct answer is D .
• Question 986: If $x=\frac{y}{2}$,evaluate$(\frac{x^3}{y^3}+\frac{1}{2})÷(\frac{1}{2}-\frac{x^2}{y^2})$ Options:
  A) 5/8
  B) 5/2
  C) 5/4
  D) 5/16
  Show Answer
  The correct answer is B .
• Question 987:

  

  The venn diagram above shows a class of 40 students with the games they play. How many of the students play two games only?

  Options:
  A) 19
  B) 16
  C) 15
  D) 4
  Show Answer
  The correct answer is C .
• Question 988: Find the capacity in litres of a cylindrical well of radius 1 meter and depth 14 metres. Options:
  A) 44 000 litres
  B) 4400 litres
  C) 440 litres
  D) 44 litres
  Show Answer
  The correct answer is C .
• Question 989:

  Given that $\theta$ is an acute angle and sin $\theta$ = $\frac{m}{n}$, find cos $\theta$

  Options:
  A) $\frac{\sqrt{n^2-m^2}}{m}$
  B) $\frac{\sqrt{(n+m)(n-m)}}{n}$
  C) $\frac{m}{\sqrt{n^2-m^2}}$
  D) $\sqrt{\frac{n}{n^2-m^2}}$
  Show Answer
  The correct answer is B .
• Question 990: Udoh deposited ₦150.00 in the bank. At the end of 5 years the simple interest on the principal was ₦55.00. At what rate per annum was the interest paid? Options:
  A) 11%
  B) 7$\frac{1}{3}$%
  C) 5
  D) 3$\frac{1}{2}$%
  Show Answer
  The correct answer is B .