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 861: 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 862: The larger value of y for which (y - 1)² = 4y - 7 is Options:
  A) 2
  B) 4
  C) 6
  D) 7
  E) 8
  Show Answer
  The correct answer is B .
• Question 863:
  

  The equation of the line in the graph is

  Options:
  A) 3y = 3x + 12
  B) 3y = 3x + 12
  C) 3y = -4x + 12
  D) 3y = -4x + 9
  Show Answer
  The correct answer is C .
• Question 864: Find ($\frac{1}{0.06}÷\frac{1}{0.042}$)^-1 Options:
  A) 1.43
  B) 1.53
  C) 3.14
  D) 4.42
  Show Answer
  The correct answer is A .
• Question 865: In a right angled triangle, if tan $\theta$ = $\frac{3}{4}$. What is cos$\theta$ - sin$\theta$? Options:
  A) $\frac{2}{3}$
  B) $\frac{3}{5}$
  C) $\frac{1}{5}$
  D) $\frac{4}{5}$
  Show Answer
  The correct answer is C .
• Question 866: If 0.0000152 x 0.042 = A x 10⁸, where 1 $\le$ A < 10, find A and B. Options:
  A) A = 9, B = 6.38
  B) A = 6.38, B = -9
  C) A = -6.38, B = -9
  D) A = -9, B = -6.38
  Show Answer
  The correct answer is B .
• Question 867: 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 868: Twenty girls and y boys sat on an examination. The mean marks obtained by the girls and boys were 52 and 57 respectively. if the total score for both girls and boys was 2950, find y. Options:
  A) 51
  B) 48
  C) 30
  D) 25
  E) 18
  Show Answer
  The correct answer is C .
• Question 869:

  $\begin{array}{ccccc}Weight(s)& 0-10& 10-20& 20-30& 40-50\\ \text{Number of coconuts}& 10& 27& 19& 6& 2\end{array}$

  Estimate the mode of the frequency distribution above.

  Options:
  A) 13.2g
  B) 15.0g
  C) 16.8g
  D) 17.5g
  Show Answer
  The correct answer is C .
• Question 870:

  Evaluate $\frac{x{y}^2-x^{2}y}{x^2-x{y}^1}$, when x = -2 and y = 2

  Options:
  A) 3
  B) -$\frac{3}{5}$
  C) $\frac{3}{5}$
  D) -3
  Show Answer
  The correct answer is D .