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 2811:

  If (x - a) is a factor of bx - ax + x², find the other factor.

  Options:
  A) (x + b)
  B) (x - b)
  C) (a + b)
  D) (a - b)
  Show Answer
  The correct answer is A .
• Question 2812:

  If given two points A(3, 12) and B(5, 22) on a x-y plane. Find the equation of the straight line with intercept at 2.

  Options:
  A) y = 5x + 2
  B) y = 5x + 3
  C) y = 12x + 2
  D) y = 22x + 3
  Show Answer
  The correct answer is A .
• Question 2813: If $log{X}^{\frac{1}{2}}$ 64 = 3, find the value of x. Options:
  A) 4
  B) 16
  C) 32
  D) 64
  Show Answer
  The correct answer is B .
• Question 2814: A number is selected at random between 20 and 30, both numbers inclusive. Find the probability that the number is a prime Options:
  A) $\frac{2}{11}$
  B) $\frac{5}{11}$
  C) $\frac{6}{11}$
  D) $\frac{8}{11}$
  Show Answer
  The correct answer is A .
• Question 2815: In how many ways can2 students be selected from a group of 5 students in a debating competition? Options:
  A) 25 ways
  B) 10 ways
  C) 15 ways
  D) 20 ways
  Show Answer
  The correct answer is B .
• Question 2816:

  

  The area under the speed time graph given the total distance covered by car. What is the average velocity to two places of decimals?

  Options:
  A) 17.72 meter/sec.
  B) 21.67 meters/sec
  C) 2.5 meter/sec.
  D) 20.45 meters/sec.
  E) 13.33 meter/sec.
  Show Answer
  The correct answer is D .
• Question 2817: Given that tan x = $\frac{2}{3}$, where 0^o d" x d" 90^o, Find the value of 2sinx. Options:
  A) $\frac{2\sqrt{13}}{13}$
  B) $\frac{3\sqrt{13}}{13}$
  C) $\frac{4\sqrt{13}}{13}$
  D) $\frac{6\sqrt{13}}{13}$
  Show Answer
  The correct answer is C .
• Question 2818: Find the principal which amounts to ₦5,500 at a simple interest in 5 years at 2% per annum. Options:
  A) ₦4,900
  B) ₦5,000
  C) ₦4,700
  D) ₦4,800
  Show Answer
  The correct answer is B .
• Question 2819: 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 2820:

  Rationalize $\frac{\sqrt{2}+\sqrt{3}}{\sqrt{2}-\sqrt{3}}$

  Options:
  A) $-5-2\sqrt{6}$
  B) $-5+3\sqrt{2}$
  C) $5-2\sqrt{3}$
  D) $5+2\sqrt{6}$
  Show Answer
  The correct answer is A .