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 2511: 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 .
• Question 2512: What is log₇(49^a) - log₁₀(0.01)? Options:
  A) $\frac{{49}^a}{100}$
  B) $\frac{a}{2}$ + 2
  C) 7^2a + 2
  D) 2a + 2
  E) $\frac{2a}{2}$
  Show Answer
  The correct answer is D .
• Question 2513: Find the range of the value of x satisfying the inequalities 5 + x $\le$ 8 and 13 + x $\ge$ 7 Options:
  A) -3 $\le$ x $\le$ 3
  B) 3 $\le$ x $\le$ 6
  C) -6 $\le$ x $\le$ 3
  D) -6 $\le$ x $\le$ -3
  Show Answer
  The correct answer is C .
• Question 2514: 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 2515: 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 .
• Question 2516:

  Find the mean deviation of 1, 2, 3 and 4

  Options:
  A) 1.0
  B) 1.5
  C) 2.0
  D) 2.5
  Show Answer
  The correct answer is A .
• Question 2517: Without using tables find the numerical value of log₇49 + log7_{($\frac{1}{7}$)} Options:
  A) 1
  B) 2
  C) 3
  D) 7
  E) 9
  Show Answer
  The correct answer is A .
• Question 2518: Find the radius of a sphere whose surface area is 154 cm² Options:
  A) 7.00 cm
  B) 3.50 cm
  C) 3.00 cm
  D) 1.75 cm
  Show Answer
  The correct answer is B .
• Question 2519:

  

  Which of the following equations represents the graph above?

  Options:
  A) y = 2 + 7x + 4x²
  B) y = 2 - 7x + 4x²
  C) y = 2 + 7x - 4x²
  D) y = 2 - 7x - 4x²
  Show Answer
  The correct answer is D .
• Question 2520: Factorize r² - r(2p + q) + 2pq Options:
  A) (r - 2q)(2r - p)
  B) (r - p)(r + p0
  C) (r - q)(r - 2p)
  D) (2r - q)(r + p)
  Show Answer
  The correct answer is C .