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 1511:

  

  What is the equation of the quadratic function represented by the graph?

  Options:
  A) y = x² + x - 2
  B) y = -x² - x + 2
  C) y = x² - x - 2
  D) y = -x² - x + 2
  Show Answer
  The correct answer is C .
• Question 1512: 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 1513: A binary operation $\ast$ is defined on a set of real numbers by x $\ast$ y = x^y for all real values of x and y. If x $\ast$ 2 = x. Find the possible values of x Options:
  A) 0, 1
  B) 1, 2
  C) 2, 2
  D) 0, 2
  Show Answer
  The correct answer is A .
• Question 1514: Twenty girls and y boys sat on an examination. The mean marks obtained by the girls and boys were 52 and 57 respectively. if the total score for both girls and boys was 2950, find y. Options:
  A) 51
  B) 48
  C) 30
  D) 25
  E) 18
  Show Answer
  The correct answer is C .
• Question 1515:

  A trader realises 10x - x${}^2$ Naira profit from the sale of x bags of corn. How many bags will give him the maximum profit?

  Options:
  A) 7
  B) 6
  C) 5
  D) 4
  Show Answer
  The correct answer is C .
• Question 1516: A car painter charges ₦40.00 per day for himself and ₦10.00 per day for his assistant. if a fleet of cars were painted for ₦2000.00 and the painter worked 10days more than his assistant, how much did the assistant receive? Options:
  A) ₦32.00
  B) ₦320.00
  C) ₦420.00
  D) ₦1680.00
  Show Answer
  The correct answer is B .
• Question 1517:

  The ratio of the length of two similar rectangular blocks is 2 : 3. If the volume of the larger block is 351cm${}^3$, then the volume of the other block is?

  Options:
  A) 234.00 cm³
  B) 526.50 cm³
  C) 166.00 cm³
  D) 687cm³
  Show Answer
  The correct answer is A .
• Question 1518: If dy/dx = 2x - 3 and y = 3 when x = 0, find y in terms of x. Options:
  A) 2x² - 3x
  B) x² - 3x
  C) x² - 3x - 3
  D) x² - 3x + 3
  Show Answer
  The correct answer is D .
• Question 1519: If 5x - 3 = 4x - 7, what is the value 6x? Options:
  A) 24
  B) 6
  C) 4
  D) -4
  E) -24
  Show Answer
  The correct answer is E .
• Question 1520:

  The weight of a day-old chick was measured to be 0.21g. If the actual weight of the chick is 0.18g, what was the percentage error in the measurement?

  Options:
  A) 15.5%
  B) 18.2%
  C) 14.8%
  D) 16.7%
  Show Answer
  The correct answer is D .