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 2751: T varies inversely as the square root of F when T = 7, F = 2$\frac{1}{4}$. Find T when F = $\frac{27}{9}$ Options:
  A) 1.5
  B) 6.3
  C) 6.3
  D) 12.6
  E) 21
  Show Answer
  The correct answer is B .
• Question 2752: If 5^{(x + 2y)} = 5 and 4^{(x + 3y)} = 16, find 3^{(x + y)} Options:
  A) 7
  B) 1
  C) 3
  D) 27
  Show Answer
  The correct answer is B .
• Question 2753:

  Given that log₄(y - 1) + log₄($\frac{1}{2}$x) = 1 and log₂(y + 1) + log₂x = 2, solve for x and y respectively

  Options:
  A) 2, 3
  B) 3, 2
  C) -2, -3
  D) -3, -2
  Show Answer
  The correct answer is C .
• Question 2754:

   

  The histogram above shows the ages of the victims of a pollution. How many people were involved in the pollution?

  Options:
  A) 15
  B) 18
  C) 20
  D) 21
  Show Answer
  The correct answer is C .
• Question 2755: 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 2756: If y = x cos x, find dy/dx Options:
  A) sin x - x cos x
  B) sin x + x cos x
  C) cos x + x sin x
  D) cos x - x sin x
  Show Answer
  The correct answer is D .
• Question 2757:

  If (x - a) is a factor of bx - ax + x², find the other factor.

  Options:
  A) (x + b)
  B) (x - b)
  C) (a + b)
  D) (a - b)
  Show Answer
  The correct answer is A .
• Question 2758:

  $\begin{array}{ccccccc}\text{Marks}& 3& 4& 5& 6& 7& 8\\ \text{Frequency}& 5& y-1& y& 9& 4& 1\end{array}$

  The table above gives the frequency distribution of marks obtained by a group of students in a test. If the total mark scored is 200, the value of y is

  Options:
  A) 11
  B) 15
  C) 9
  D) 13
  Show Answer
  The correct answer is A .
• Question 2759: 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 2760:
  

  The histogram above shows the distribution of passengers in taxis of a certain motor park. How many taxis have more than 4 passengers

  Options:
  A) 16
  B) 17
  C) 14
  D) 15
  Show Answer
  The correct answer is B .