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 1101: The cost of production of an article is made up as follows: Labour ₦70, Power ₦15, Materials ₦30, Miscellaneous ₦5. Find the angle of the sector representing Labour in a pie chart Options:
  A) 210^o
  B) 105^o
  C) 105^o
  D) 175^o
  E) 90^o
  Show Answer
  The correct answer is A .
• Question 1102: Make $\frac{a}{x}$ the subject of formula $\frac{x+1}{x-a}$ Options:
  A) $\frac{m-1}{m+1}$
  B) $\frac{m+1}{1-m}$
  C) $\frac{m-1}{1+m}$
  D) $\frac{m+1}{m-1}$
  Show Answer
  The correct answer is A .
• Question 1103: Find the mean deviation of 20, 25, 21, 27, 28, 29, to the nearest whole number Options:
  A) 2
  B) 3
  C) 4
  D) 5
  E) 6
  Show Answer
  The correct answer is B .
• Question 1104: A circle of perimeter 28cm is opened to form a square. What is the maximum possible area of the square? Options:
  A) 56cm²
  B) 49cm²
  C) 98cm²
  D) 28cm²
  Show Answer
  The correct answer is B .
• Question 1105: A sales boy gave a change of N75.00 to a buyer instead of N80.00, calculate his percentage error, correct to one decimal place? Options:
  A) 6.00%
  B) 6.20%
  C) 6.30%
  D) 6.60%
  E) 6.70%
  Show Answer
  The correct answer is C .
• Question 1106:

  if y = 23${}_{five}$ + 101${}_{three}$ find y leaving your answer in base two

  Options:
  A) 1110
  B) 10111
  C) 11101
  D) 111100
  Show Answer
  The correct answer is B .
• Question 1107: Find the reciprocal of $\frac{\frac{2}{3}}{\frac{1}{2}+\frac{1}{3}}$ Options:
  A) $\frac{4}{5}$
  B) $\frac{5}{4}$
  C) $\frac{2}{5}$
  D) $\frac{6}{7}$
  Show Answer
  The correct answer is B .
• Question 1108: 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 1109: 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 1110: Which of the formula below represents the general terms of the following set of numbers(-1, $\frac{2}{3}$, -$\frac{1}{2}$, $\frac{2}{5}$......) for n = 1, 2, 3, 4.......? Options:
  A) $\frac{2}{n+1}$
  B) (-1)^{n + 1} $\frac{2}{n+1}$
  C) (-1)ⁿ $\frac{2}{n+1}$
  D) $\frac{n}{2n-1}$
  E) (-1)ⁿ$\frac{n}{2n-1}$
  Show Answer
  The correct answer is C .