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 1461: 3y = 4x - 1 and Ky = x + 3 are equations of two straight lines. If the two lines are perpendicular to each other, find K. Options:
  A) -4/3
  B) -3/4
  C) 3/4
  D) 4/3
  Show Answer
  The correct answer is A .
• Question 1462:

  Two binary operations $\ast$ and $\oplus$ are defines as m $\ast$ n = mn - n - 1 and m $\oplus$ n = mn + n - 2 for all real numbers m, n.

  Find the value of 3 $\oplus$ (4 $\ast$ 50)

  Options:
  A) 60
  B) 57
  C) 54
  D) 42
  Show Answer
  The correct answer is C .
• Question 1463: Find the integral values of x and y satisfying the inequality 3y + 5x $\le$ 15, given that y > 0, y < 3 and x > 0. Options:
  A) (1,1), (1,2), (1,3)
  B) (1,1), (2,1), (1,3)
  C) (1,1), (3,1), (2,2)
  D) (1,1), (1,2), (2,1)
  Show Answer
  The correct answer is D .
• Question 1464: The ratio of the base area of a hollow cone to that of its curved surface is 1:4. If its base radius is 7cm, calculate the slant height of the cone Options:
  A) 7cm
  B) 22cm
  C) 28cm
  D) 49cm
  E) 154cm
  Show Answer
  The correct answer is C .
• Question 1465:

  The cumulative frequency function of the data below is given below by the equation y = cf(x). What is cf(5)?

  $\begin{array}{cc}Score(n)& Frequency(f)\\ 3& 30\\ 4& 32\\ 5& 30\\ 6& 35\\ 8& 20\end{array}$

  Options:
  A) 30
  B) 32
  C) 55
  D) 62
  E) 92
  Show Answer
  The correct answer is E .
• Question 1466: 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 1467: Solve the inequality 2 - x > x².
  Options:
  A) x < -2 or x > 1
  B) x > 2 or x< -1
  C) -1 < x < 2
  D) -2 < x < 1
  Show Answer
  The correct answer is D .
• Question 1468: 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 .
• Question 1469:

  

  The bar chart above shows the number of visitors received in a week. How many visitors were received on Friday, Tuesday and Sunday?

  Options:
  A) 17
  B) 22
  C) 20
  D) 16
  Show Answer
  The correct answer is D .
• Question 1470:

  Find the area, to the nearest cm${}^2$, of the triangle whose sides are in the ratio 2 : 3 : 4 and whose perimeter is 180 cm.

  Options:
  A) 1162 cm${}^2$
  B) 1163 cm${}^2$
  C) 1160 cm${}^2$
  D) 1161 cm${}^2$
  Show Answer
  The correct answer is A .