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 2491: What is the size of an exterior angle of a regular pentagon? Options:
  A) 36^o
  B) 60^o
  C) 72^o
  D) 120^o
  E) 360^o
  Show Answer
  The correct answer is C .
• Question 2492:

  Evaluate log₅($y^2{x}^5÷125b^{\frac{1}{2}})$

  Options:
  A) 2 log₅y + 5log₅ y² − 3
  B) log₅ y² + 5log₅ x + 3
  C) 25log_y 5 + 3
  D) 2log₅y + 5log₅x − ½ log₅b −3
  Show Answer
  The correct answer is D .
• Question 2493: 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 2494: 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 2495: The binary operation on the set of real numbers is defined by m*n = $\frac{mn}{2}$ for all m, n $\in$ R. If the identity element is 2, find the inverse of -5 Options:
  A) $-\frac{4}{5}$
  B) $-\frac{2}{5}$
  C) 4
  D) 5
  Show Answer
  The correct answer is A .
• Question 2496: A man earns ₦3,500 per month out of which he spends 15% on his children's education. If he spends additional ₦1,950 on food, how much does he have left? Options:
  A) ₦525
  B) ₦1,025
  C) ₦1,950
  D) ₦2,975
  Show Answer
  The correct answer is B .
• Question 2497: 2 bags of sugar at N_x per bag are mixed with 3 bags of sugar at N_y per bag. What is the cost in N of the mixture per bag? Options:
  A) $\frac{(2x+3y)}{5}$
  B) $\frac{(x+y)}{2}$
  C) $\frac{x}{2}+\frac{y}{3}$
  D) $\frac{(x+y)}{5}$
  E) $\frac{(3x+2y)}{5}$
  Show Answer
  The correct answer is A .
• Question 2498: What is the mean deviation of x, 2x, x+1 and 3x. If their mean is 2? Options:
  A) 0.5
  B) 1.0
  C) 1.5
  D) 2.0
  Show Answer
  The correct answer is A .
• Question 2499: The bearing of a point Y from point x is 150°. What is the bearing of X from Y? Options:
  A) 330°
  B) 240°
  C) 150°
  D) 120°
  E) 30°
  Show Answer
  The correct answer is A .
• Question 2500: Factorize 9(x + y)² - 4(x - y)² Options:
  A) (x + y)(5x + y)
  B) (x + y)²
  C) (x + 5y)(5x + y)
  D) 5(x + y)²
  Show Answer
  The correct answer is C .