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 1: Simplify $\frac{3^{-5n}}{9^{1-n}}\times {27}^{n+1}$ Options:
  A) 3²
  B) 3³
  C) 3⁵
  D) 3
  Show Answer
  The correct answer is D .
• Question 2: Find the mean of the following 24.57, 25.63, 24.32, 26.01, 25.77 Options:
  A) 25.12
  B) 25.30
  C) 25.26
  D) 25.50
  E) 25.75
  Show Answer
  The correct answer is C .
• Question 3: The interior angles of a quadrilateral are (x + 15)^o, (2x - 45)^o and (x + 10)^o. Find the value of the least interior angle. Options:
  A) 112^o
  B) 102^o
  C) 82^o
  D) 52^o
  Show Answer
  The correct answer is D .
• Question 4: Solve for x and y respectively
  3x - 5y = 9
  6x - 4y = 12 Options:
  A) $\frac{3}{4}$, 1
  B) $\frac{4}{3}$, 1
  C) $\frac{3}{4}$, -1
  D) $\frac{4}{3}$, -1
  Show Answer
  The correct answer is D .
• Question 5: 7 pupils of average age 12 years leave a class of 25 pupils of average age 14 years. If 6 new pupils of average age 11years join the class, what is the average age of the pupils now in the class? Options:
  A) 13years
  B) 12 years 7$\frac{1}{2}$ months
  C) 13 years 5 months
  D) 13 years 10 months
  E) 11 years
  Show Answer
  The correct answer is D .
• Question 6: If two dice are thrown together, what is the probability of obtaining at least a score of 10? Options:
  A) $\frac{1}{6}$
  B) $\frac{1}{12}$
  C) $\frac{5}{6}$
  D) $\frac{11}{12}$
  Show Answer
  The correct answer is A .
• Question 7:

  Solve for x in $\frac{4x-6}{3}\le \frac{3+2x}{2}$

  Options:
  A) $x\le 1\frac{1}{2}$
  B) $x\le \frac{21}{2}$
  C) $x\ge \frac{21}{2}$
  D) $x\ge 1\frac{1}{2}$
  Show Answer
  The correct answer is B .
• Question 8: If x is inversely proportional to y and x = 2$\frac{1}{2}$ when y = 2, find x if y = 4 Options:
  A) 4
  B) 5
  C) 1$\frac{1}{4}$
  D) 2$\frac{1}{4}$
  Show Answer
  The correct answer is C .
• Question 9:

  At what rate would a sum of N100.00 deposited for 5 years raise an interest of N7.50?

  Options:
  A) $\frac{1}{2}$%
  B) 2$\frac{1}{2}$%
  C) 1.5%
  D) 25%
  Show Answer
  The correct answer is C .
• Question 10: Express the product of 0.21 and 0.34 in standard form Options:
  A) 7.14 x 10^-3
  B) 7.14 x 10^-2
  C) 7.14 x 10^-1
  D) 7.14 x 10^-4
  Show Answer
  The correct answer is B .