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 1111: If x + $\frac{1}{x}$ = 4, find x² + $\frac{1}{x^2}$ Options:
  A) 16
  B) 14
  C) 12
  D) 9
  Show Answer
  The correct answer is B .
• Question 1112:

  Bello buys an old bicycle for ₦9,200.00 and spends ₦1,500.00 on its repairs. If he sells the bicycle for ₦13,400.00, his gain percent is

  Options:
  A) 25.23%
  B) 31.34%
  C) 88.81%
  D) 42.54%
  Show Answer
  The correct answer is A .
• Question 1113: At what value of X does the function y = -3 - 2x + X² attain a minimum value? Options:
  A) -1
  B) 14
  C) 4
  D) 1
  Show Answer
  The correct answer is D .
• Question 1114: A solid metal cube of side 3 cm is placed in a rectangular tank of dimension 3, 4 and 5 cm. What volume of water can the tank now hold Options:
  A) 48 cm³
  B) 33 cm³
  C) 60 cm³
  D) 27 cm³
  Show Answer
  The correct answer is B .
• Question 1115: Two ladders of length 5m and 7m lean against a pole and make angles 45° and 60° with the ground respectively. What is their distance apart on the pole correct to two decimal places? Options:
  A) 9.60m
  B) 6.06m
  C) 2.54m
  D) 2.53m
  E) 2.00m
  Show Answer
  The correct answer is D .
• Question 1116: A cylindrical tank has a capacity of 6160m³. What is the depth of the tank if the radius of its base is 28cm? Options:
  A) 8.0m
  B) 7.5m
  C) 5.0m
  D) 2.5m
  Show Answer
  The correct answer is D .
• Question 1117:

  The result of rolling a fair die 150 times is as summarized in the table given.

  $\begin{array}{ccccccc}\text{Number}& 1& 2& 3& 4& 5& 6\\ \text{Frequency}& 12& 18& x& 30& 2x& 45\end{array}$

  What is the probability of obtaining a 5?

  Options:
  A) $\frac{3}{10}$
  B) $\frac{1}{5}$
  C) $\frac{1}{6}$
  D) $\frac{1}{10}$
  Show Answer
  The correct answer is B .
• Question 1118: An operation * is defined on the set of real numbers by a * b = ab + 2(a + b + 1). find the identity elements Options:
  A) 2
  B) 1
  C) -1
  D) -2
  Show Answer
  The correct answer is C .
• Question 1119: Find the range of the following set of numbers 0.4, −0.4, 0.3, 0.47, −0.53, 0.2 and −0.2 Options:
  A) 1.03
  B) 0.07
  C) 0.03
  D) 1.0
  Show Answer
  The correct answer is D .
• Question 1120: If -8, m, n, 19 are in arithmetic progression, find (m, n) Options:
  A) 1, 10
  B) 2, 10
  C) 3, 13
  D) 4, 16
  Show Answer
  The correct answer is A .