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 1621:

  The angles of a polygon are given by 2x, 5x, x and 4x respectively. The value of x is

  Options:
  A) 31°
  B) 30°
  C) 26°
  D) 48°
  Show Answer
  The correct answer is B .
• Question 1622:

  

  In the figure, GHIJKLMN is a cube of side a. Find the length of HN.

  Options:
  A) $\sqrt{3a}$
  B) 3a
  C) 3a²
  D) a$\sqrt{2}$
  E) a$\sqrt{3}$
  Show Answer
  The correct answer is E .
• Question 1623: 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 1624: If Musa scored 75 in biology instead of 57, his average mark in four subjects would have been 60. What was his total mark? Options:
  A) 282
  B) 240
  C) 222
  D) 210
  Show Answer
  The correct answer is C .
• Question 1625: Find all real numbers x which satisfy the inequality $\frac{1}{3}$(x + 1) - 1 > $\frac{1}{5}$(x + 4)
  Options:
  A) x < 11
  B) x < -1
  C) x > 6
  D) x > 11
  Show Answer
  The correct answer is D .
• Question 1626: In a family of 21 people, the average age is 14years. If the age of the grandfather is not counted, the average age drops to 12 years. What is the age of the grandfather? Options:
  A) 35 years
  B) 40 years
  C) 42 years
  D) 54 years
  Show Answer
  The correct answer is D .
• Question 1627: If log₁₀2 = x, express log₁₀12.5 in terms of x Options:
  A) 2(1 + x)
  B) 2 + 3x
  C) 2(1 - x)
  D) 2 - 3x
  Show Answer
  The correct answer is D .
• Question 1628:

  The table shown gives the marks scored by a group of student in a test. Use the table to answer the question given.

  Mark	0	1	2	3	4	5
  Frequency	1	2	7	5	4	3

  What is the median mark?

  Options:
  A) 1
  B) 2
  C) 3
  D) 4
  Show Answer
  The correct answer is C .
• Question 1629:

  $\begin{array}{cccc}\text{Class Interval}& Frequency& \text{Class boundaries}& \text{Class Mid-point}\\ 1.5-1.9& 2& 1.45-1.95& 1.7\\ 2.0-2.4& 21& 1.95-2.45& 2.2\\ 2.5-2.9& 4& 2.45-2.95& 2.7\\ 3.0-2.9& 15& 2.95-3.45& 3.2\\ 3.5-3.9& 10& 3.45-3.95& 3.7\\ 4.0-4.4& 5& 3.95-4.45& 4.2\\ 4.5-4.9& 3& 4.45-4.95& 4.7\end{array}$

  Find the mode of the distribution above to find the mode of the distribution.

  Options:
  A) 3.2
  B) 3.3
  C) 3.7
  D) 4.2
  Show Answer
  The correct answer is B .
• Question 1630: If s = $\sqrt{(\frac{a^2}{x^2}-\frac{b^2}{x^2})}$what does y equal? Options:
  A) $\sqrt{[(b^2-a^2)]÷(s^2-x^2)}$
  B) $\sqrt{[(b^2-a^2)÷(s^2\times 2)]}$
  C) $\sqrt{[x^2-a^2-b^2]÷s}$
  D) $[x^2-a^2-b^2]÷s$
  E) $\sqrt{[(b^2\times 2)÷(s^2\times 2-a^2)]}$
  Show Answer
  The correct answer is E .