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 2381: The surface area of a sphere is 616m2. what is the volume of-the sphere (correct to two significant figures)? (take π = 3.142) Options:
  A) 14 cm${}^3$
  B) 210 cm${}^3$
  C) 1,400 cm${}^3$
  D) 2,100 cm${}^3$
  E) 4,300 cm${}^3$
  Show Answer
  The correct answer is C .
• Question 2382: The mean of seven numbers is 10. If six of the numbers are 2, 4, 8, 14, 16 and 18, find the mode. Options:
  A) 6
  B) 8
  C) 14
  D) 2
  Show Answer
  The correct answer is B .
• Question 2383:

  The interior angle of a regular polygon is five times the size of its exterior angle. Identify the polygon.

  Options:
  A) dodecagon
  B) enneadecagon
  C) icosagon
  D) hendecagon
  Show Answer
  The correct answer is A .
• Question 2384:

  Differentiate $\frac{2x}{\sin x}$ with respect to x.

  Options:
  A) $2\cot x\sec x(1+\tan x)$
  B) $2\csc x-x\cot x$
  C) $2x\csc x+\tan x$
  D) $2\csc x(1-x\cot x)$
  Show Answer
  The correct answer is D .
• Question 2385:

  The goals scored by 40 football teams from three league divisions are recorded below:

  $\begin{array}{cccccccc}\text{Number of goals}& 0& 1& 2& 3& 4& 5& 6\\ \text{frequency}& 4& 3& 15& 16& 1& 0& 1\end{array}$

  What is the total number of goals scored by all the terms?

  Options:
  A) 21
  B) 40
  C) 91
  D) 96
  Show Answer
  The correct answer is C .
• Question 2386: If log₁₀4 = 0.6021, evaluate log₁₀4^1/3 Options:
  A) 0.3011
  B) 0.9021
  C) 1.8063
  D) 0.2007
  Show Answer
  The correct answer is D .
• Question 2387:

  Simplify (1 + $\frac{\frac{x-1}{1}}{\frac{1}{x+1}}$)(x + 2)

  Options:
  A) (x² - 1)(x + 2)
  B) x²(x + 2)
  C) x² + 34
  D) $\frac{3x^2-1}{(x-1)}$
  Show Answer
  The correct answer is B .
• Question 2388: 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 2389:

  

  In the figure, $△$ ABC are in adjacent planes. AB = AC = 5cm, BC = 6cm and o then AE is equal to

  Options:
  A) 3$\sqrt{2}$
  B) 2$\sqrt{3}$
  C) $\frac{\sqrt{3}}{2}$
  D) $\frac{2}{\sqrt{3}}$
  Show Answer
  The correct answer is B .
• Question 2390: A straight line makes an angle of 30° with the positive x-axis and cuts the y-axis at y = 5. Find the equation of the straight line. Options:
  A) y = (x/10) + 5
  B) y = x + 5
  C) √3y = - x + 5√3
  D) √3y = x + 5√3
  Show Answer
  The correct answer is D .