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 1:

  Let a binary operation '*' be defined on a set A. The operation will be commutative if

  Options:
  A) a*b = b*a
  B) (a*b)*c = a*(b*c)
  C) (b ο c)*a = (b*a) ο (c*a)
  D) None of the above
  Show Answer
  The correct answer is A .
• Question 2:

  

  The histogram above shows the distribution of monthly incomes of the workers in a company. How many workers earn more than ₦700.00?

  Options:
  A) 16
  B) 12
  C) 8
  D) 6
  Show Answer
  The correct answer is B .
• Question 3: 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 4: What is the least possible value of $\frac{9}{1+2x^2}$ if 0 $\ge$ x $\ge$ 2? Options:
  A) 9
  B) 5
  C) 1
  D) 2
  Show Answer
  The correct answer is C .
• Question 5: The graph of the function y = x² + 4 and a straight line PQ are drawn to solve the equation x² - 3x + 2 = 0. What is the equation of PQ? Options:
  A) y = 3x - 2
  B) y = 3x + 2
  C) y = 3x - 4
  D) y = 3x + 4
  Show Answer
  The correct answer is B .
• Question 6: A man is standing in the corridor of a 10-storey building and looking down at a tall tree in front of the building. He sees the top of the tree at angle of depression of 30^o. If the tree is 200m tall and the man's eyes are 300m above the ground, calculate the angle of depression of the foot tree as seen by the man Options:
  A) 30^o
  B) 60^o
  C) 45^o
  D) 25^o
  Show Answer
  The correct answer is B .
• Question 7:

  Solve the following equation: $\frac{2}{(2r-1)}$ -$\frac{5}{3}$ = $\frac{1}{(r+2)}$

  Options:
  A) ( -1,$\frac{5}{2}$ )
  B) ( 1, - $\frac{5}{2}$ )
  C) ( $\frac{5}{2}$, 1 )
  D) (2,1)
  Show Answer
  The correct answer is B .
• Question 8:

  

  In the figure, PQRS is a square of sides 8cm. What is the area of $△$UVW?

  Options:
  A) 64 sq. cm
  B) 40 sq.cm
  C) 50 sq.cm
  D) 10 sq.cm
  Show Answer
  The correct answer is D .
• Question 9: 7 pupils of average age 12 years leave a class of 25 pupils of average age 14 years. If 6 new pupils of average age of 11 years join the class, what is the average age of the pupils now in the class? Options:
  A) 13 years
  B) 12 years 7$\frac{1}{2}$ months
  C) 13 years 5 months
  D) 13 years 10 months
  E) 11 years
  Show Answer
  The correct answer is D .
• Question 10:

  If X, Y can take values from the set (1, 2, 3 ,4), find the probability that the product of X and Y is not greater than 6.

  Options:
  A) $\frac{5}{8}$
  B) $\frac{5}{16}$
  C) $\frac{1}{2}$
  D) $\frac{3}{8}$
  Show Answer
  The correct answer is D .