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 1181:

  3 - 7, 8 - 12, 13 - 17, 18 - 22. Which of the following is/are true?

  I. The class Interval is 4

  II. The class boundaries are 2.5, 7.5, 12.5, 18.5, 22.5

  III. The mid-marks are 5, 10, 15, and 20

  Options:
  A) I only
  B) II only
  C) III only
  D) I and II only
  E) II and III only
  Show Answer
  The correct answer is A .
• Question 1182: Evaluate $1-(\frac{1}{5}\times \frac{2}{3})+(5+\frac{2}{3})$ Options:
  A) $4$
  B) $3$
  C) $2\frac{2}{3}$
  D) $3\frac{2}{3}$
  Show Answer
  The correct answer is D .
• Question 1183: A student spent $\frac{1}{5}$ of his allowances on books, $\frac{1}{3}$ of the remainder on food and kept the rest for contingences. What fraction was kept? Options:
  A) $\frac{7}{16}$
  B) $\frac{8}{15}$
  C) $\frac{2}{3}$
  D) $\frac{4}{5}$
  Show Answer
  The correct answer is B .
• Question 1184:

  

  In the diagram, O is the centre of the circle and POQ a diameter. If POR = 96${}^{\circ }$, find the value of ORQ.

  Options:
  A) 84${}^{\circ }$
  B) 48${}^{\circ }$
  C) 45${}^{\circ }$
  D) 42${}^{\circ }$
  Show Answer
  The correct answer is B .
• Question 1185: If y = x cosx, find $\frac{dy}{dx}$. Options:
  A) cos x - x sinx
  B) sinx - x cosx
  C) sin x + x cosx
  D) cosx + x sin x
  Show Answer
  The correct answer is A .
• Question 1186: 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 1187: The angle between the positive horizontal axis and a given line is 135^o. Find the equation of the line if it passes through the point (2,3) Options:
  A) x - y = 1
  B) x + y = 1
  C) x + y = 5
  D) x - y = 5
  Show Answer
  The correct answer is C .
• Question 1188:

  A number is selected at random between 20 and 30, both numbers inclusive. Find the probability that the number is a prime.

  Options:
  A) $\frac{2}{11}$
  B) $\frac{5}{11}$
  C) $\frac{6}{11}$
  D) $\frac{8}{11}$
  Show Answer
  The correct answer is A .
• Question 1189:

  Find the range of values of t which satisfies the inequality.

  2t − 1 $\le$ 3 and 2− t $\ge$ 5

  Options:
  A) -3 $\le$ t $\le$ 1
  B) -2 $\le$ t $\le$ 3
  C) -3 $\le$ t $\le$ 4
  D) -3 $\le$ t $\le$ 2
  Show Answer
  The correct answer is D .
• Question 1190:

  If the 3rd and 7th terms of a G.P are 9 and 1/9 respectively. Find the common ratio.

  Options:
  A) $\frac{1}{3}$
  B) $\frac{1}{9}$
  C) $\frac{2}{3}$
  D) $\frac{2}{9}$
  Show Answer
  The correct answer is A .