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 941: 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 942:
  

  The pie chart above shows the distribution of subjects offered by students in SSS III level. If 80 students enrolled in the class. What is the size of the angle of the sector in economics?

  Options:
  A) 24^o
  B) 39^o
  C) 32^o
  D) 36^o
  Show Answer
  The correct answer is C .
• Question 943: If e^x = 1 + $\frac{x}{2}$ + $\frac{x^2}{1.2}$ + $\frac{x^3}{1.2.3}$ + .....Find $\frac{1}{e^x}$ Options:
  A) 1 - $\frac{x}{2}$ + $\frac{x^2}{{1.2}^3}$ + $\frac{x^3}{2^4.3}$ + .........
  B) 1 - $\frac{x}{2}$ + $\frac{x^2}{{1.2}^3}$ + $\frac{x^4}{2.4.3}$ + ..
  C) 1 + $\frac{x}{2}$ + $\frac{x^2}{1.2}$ + $\frac{x^3}{1.2.3}$ + $\frac{x^4}{1.23.4}$ + .........
  D) 1 - x + $\frac{x^2}{{1.2}^3}$ + $\frac{x^3}{2^4.3}$ + .........
  E) 1 + $\frac{x}{2}$ + $\frac{x^2}{{1.2}^3}$ + $\frac{x^4}{1.2.6}$ + .........
  Show Answer
  The correct answer is C .
• Question 944: The ratio of the base area of a hollow cone to that of its curved surface is 1:4. If its base radius is 7cm, calculate the slant height of the cone Options:
  A) 7cm
  B) 22cm
  C) 28cm
  D) 49cm
  E) 154cm
  Show Answer
  The correct answer is C .
• Question 945:

  Determine the value of ${\int }_0^{\frac{\pi }{2}}(-2cosx)dx$

  Options:
  A) -2
  B) -¹/₂
  C) -3
  D) -³/₂
  Show Answer
  The correct answer is A .
• Question 946: If dy/dx = 2x - 3 and y = 3 when x = 0, find y in terms of x. Options:
  A) 2x² - 3x
  B) x² - 3x
  C) x² - 3x - 3
  D) x² - 3x + 3
  Show Answer
  The correct answer is D .
• Question 947:

  $\begin{array}{cccc}\text{Class Interval}& 3-5& 6-8& 9-11\\ \text{Frequency}& 2& 2& 2\end{array}$.

  Find the standard deviation of the above distribution.

  Options:
  A) √5
  B) √6
  C) √7
  D) √2
  Show Answer
  The correct answer is B .
• Question 948: Evaluate ${\int }_0^{\frac{\pi }{4}}se{c}^2\theta d\theta$ Options:
  A) 1
  B) 2
  C) 3
  D) 4
  Show Answer
  The correct answer is A .
• Question 949: If α and β are the roots of the equation 3x² + 5x - 2 = 0, find the value of 1/α + 1/β Options:
  A) -5/3
  B) -2/3
  C) 1/2
  D) 5/2
  Show Answer
  The correct answer is D .
• Question 950: x varies directly as y and inversely as z. when x = 5, y = 2 and z = 1. What is the value of x when y = 5 and z = 2? Options:
  A) 2.5
  B) 5
  C) 6.25
  D) 6.52
  E) 7.5
  Show Answer
  The correct answer is C .