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 1771: change 71₁₀ to base 8 Options:
  A) 107₈
  B) 106₈
  C) 71₈
  D) 17₈
  Show Answer
  The correct answer is A .
• Question 1772: Evaluate $\frac{\frac{3}{8}÷\frac{1}{2}-\frac{1}{3}}{\frac{1}{8}\times \frac{2}{3}+\frac{1}{3}}$ Options:
  A) $\frac{1}{4}$
  B) $\frac{1}{3}$
  C) $\frac{1}{2}$
  D) 1
  Show Answer
  The correct answer is D .
• Question 1773: 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 1774: If $\frac{(2\sqrt{3}-\sqrt{2})}{(\sqrt{3}+2\sqrt{2})}=m+n\sqrt{6}$, find the values of m and n respectively. Options:
  A) 1, -2
  B) -2, 1
  C) $\frac{-2}{5}$, 1
  D) 2, 3/5
  Show Answer
  The correct answer is B .
• Question 1775: A solid sphere of radius 4cm has a mass of 64kg. What will be the mass of a shell of the same metal whose internal and external radii are 2cm and 3cm respectively? Options:
  A) 5kg
  B) 16kg
  C) 19kg
  D) 6kg
  Show Answer
  The correct answer is A .
• Question 1776: Five years ago, a father was 3 times as old as his son, now their combined ages amount to 110years. thus, the present age of the father is Options:
  A) 75 years
  B) 60 years
  C) 98 years
  D) 80 years
  E) 105 years
  Show Answer
  The correct answer is D .
• Question 1777:

  

  The graph is shown is correctly represented by

  Options:
  A) y = x² - x - 2
  B) y = x² - 3x + 2
  C) y = x² - x - 1
  D) y = x² + x - 2
  Show Answer
  The correct answer is A .
• Question 1778: The sum of two numbers is 5; their product is 14. Find the numbers. Options:
  A) x = 5 or 1
  B) x = 7 or 1
  C) x = 7 or 0
  D) x = 7 or − 2
  Show Answer
  The correct answer is D .
• Question 1779: If U = {x : x is an integer and 1 ≤ x ≤ }
  E¹ = {x: x is a multiple of 3}
  E² = {x: x is a multiple of 4} and an integer is picked at random from U, find the probability that it is not in E² Options:
  A) $\frac{3}{4}$
  B) $\frac{3}{10}$
  C) $\frac{1}{4}$
  D) $\frac{1}{20}$
  Show Answer
  The correct answer is A .
• Question 1780: 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 .