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 2681:

  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 2682: If α and β are the roots of the equation 3x² + 5x - 2 = 0, find the value of 1/α + 1/β Options:
  A) -5/3
  B) -2/3
  C) 1/2
  D) 5/2
  Show Answer
  The correct answer is D .
• Question 2683: A die has four of it's faces coloured white and the remaining two coloured black. What is the probability that when the die is thrown two consecutive time, the top face will be white in both cases? Options:
  A) $\frac{2}{3}$
  B) $\frac{1}{9}$
  C) $\frac{4}{9}$
  D) $\frac{1}{36}$
  Show Answer
  The correct answer is C .
• Question 2684: A man drove for 4 hours at a certain speed, he then doubled his speed and drove for another 3 hours. Although he covered 600 kilometers. At what speed did he drive for the last 3 hours? Options:
  A) 120km/hr
  B) 60km/hr
  C) 670km/hr
  D) 40km/hr
  Show Answer
  The correct answer is B .
• Question 2685: The graph of f(x) = x² - 5x + 6 crosses the x-axis at the points Options:
  A) (-6, 0), (-1, 0)
  B) (-3, 0), (-2,0)
  C) (-6, 0),(1, 0)
  D) (2, 0), (3, 0)
  Show Answer
  The correct answer is D .
• Question 2686: Calculate the area of a parallelogram whose diagonals are of length 8cm and 12cm and intersect at an angle of 135° Options:
  A) 271.5cm²
  B) 135.8cm²
  C) 96.0cm²
  D) 48.0cm²
  E) 33.9cm²
  Show Answer
  The correct answer is E .
• Question 2687: 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 2688: If y = 3 sin(-4x), dy/dx is Options:
  A) 12x cos (4x)
  B) -12x cos (-4x)
  C) -12 cos (-4x)
  D) 12 sin (-4x)
  Show Answer
  The correct answer is C .
• Question 2689:

  Two fair coins are tossed at the same time. What is the probability of getting at least a head?

  Options:
  A) 1
  B) $\frac{3}{4}$
  C) $\frac{1}{2}$
  D) $\frac{1}{3}$
  E) $\frac{1}{4}$
  Show Answer
  The correct answer is B .
• Question 2690:

  

  Find the volume of the prism.

  Options:
  A) 990cm³
  B) 880cm³
  C) 550cm³
  D) 495cm³
  Show Answer
  The correct answer is D .