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 721: John gives one-third of his money to Janet who has ₦105.00. He then finds that his money is reduced to one-fourth of what Janet now has. Find how much money john has at first Options:
  A) ₦45.00
  B) ₦48.00
  C) ₦52.00
  D) ₦60.00
  E) ₦52.00
  Show Answer
  The correct answer is A .
• Question 722:

  Evaluate 5${}^{-3}$ log${}^2$ $\times$ 2 ${}^{2\log 3}$

  Options:
  A) 8
  B) $\frac{1}{8}$
  C) 1$\frac{1}{8}$
  D) $\frac{2}{5}$
  Show Answer
  The correct answer is B .
• Question 723: Find the total surface area of solid cone of radius 2$\sqrt{3}$cm and slanting side 4$\sqrt{3}$ Options:
  A) 8$\sqrt{3}\pi$cm²
  B) 24$\pi$cm²
  C) 15$\sqrt{3}\pi$cm²
  D) 36$\pi$cm²
  Show Answer
  The correct answer is D .
• Question 724: if P and Q are fixed points and X is a point which moves so that XP = XQ, the locus of X is Options:
  A) A straight line
  B) a circle
  C) the bisector of angle PXQ
  D) the perpendicular bisector of PQ
  Show Answer
  The correct answer is D .
• Question 725: The mean of seven numbers is 96. If an eighth number is added, the mean becomes 112. Find the eighth number. Options:
  A) 126
  B) 180
  C) 216
  D) 224
  Show Answer
  The correct answer is D .
• Question 726:

  

  The angles marked in the figure are measured in degrees. Find x.

  Options:
  A) 45${}^{\circ }$
  B) 90${}^{\circ }$
  C) 60${}^{\circ }$
  D) 15${}^{\circ }$
  E) 30${}^{\circ }$
  Show Answer
  The correct answer is E .
• Question 727: If x and y represent the mean and the median respectively of the following set of numbers 11, 12, 13, 14, 15, 16, 17, 18, 19, 21, find the $\frac{x}{y}$ correct to one decimal place Options:
  A) 18
  B) 15
  C) 1.0
  D) 5
  Show Answer
  The correct answer is C .
• Question 728: The scores of 16 students in a mathematics test are 65, 65, 55, 60, 60, 65, 60, 70, 75, 70, 65, 70, 60, 65, 65,
  70. What is the sum of the median and modal scores? Options:
  A) 125
  B) 130
  C) 140
  D) 150
  Show Answer
  The correct answer is B .
• Question 729: The area of a circular plate is one-sixteenth the surface area of a ball of a ball, If the area of the plate is given as P cm², then the radius of the ball is Options:
  A) $\frac{2P}{\pi }$
  B) $\frac{P}{\sqrt{\pi }}$
  C) $\frac{P}{\sqrt{2\pi }}$
  D) 2$\frac{P}{\pi }$
  Show Answer
  The correct answer is D .
• Question 730: 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 .