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 631: A pyramid is constructed on a cuboid. The figure has Options:
  A) twelve faces
  B) thirteen vertices
  C) fourteen edges
  D) fifteen edges
  E) sixteen edges
  Show Answer
  The correct answer is E .
• Question 632: If x is jointly proportional to the cube of y and the fourth power of z. In what ratio is x increased or decreased when y is halved and z is doubled? Options:
  A) 4:1 increase
  B) 2:1 increase
  C) 1:1 no change
  D) 1:4 decrease
  E) 3:4 decrease
  Show Answer
  The correct answer is B .
• Question 633:

  The area of an ellipse is 132cm². The length of its major axis is 14cm. Find the length of it minor axis.

  Options:
  A) 10.5cm
  B) 5cm
  C) 10cm
  D) 12cm
  Show Answer
  The correct answer is D .
• Question 634: If y = x² - 2x - 3, Find the least value of y and corresponding value of x Options:
  A) x = 3, y = 3
  B) x = 1, y = -3
  C) x = 4, y = 1
  D) x = 1, y = -4
  E) x = 2, y = -3
  Show Answer
  The correct answer is D .
• Question 635:

  Fifty boxes each of 50 bolts were inspected for the number which were defective. The following was the result:

  $\begin{array}{ccccccc}\text{No. defective per box}& 4& 5& 6& 7& 8& 9\\ \text{No. of boxes}& 2& 7& 17& 10& 8& 6\end{array}$

  The mean and the median of the distribution are respectively

  Options:
  A) 6.7, 6
  B) 7.6, 5
  C) 5.7, 87
  D) 34, 6
  Show Answer
  The correct answer is A .
• Question 636: The 4th term of an A.P. is 13 while the 10th term is 31. Find the 24th term. Options:
  A) 89
  B) 75
  C) 73
  D) 69
  Show Answer
  The correct answer is C .
• Question 637: The sum of the interior angles of a polygon is 20 right angles. How many sides does the polygon have? Options:
  A) 12
  B) 20
  C) 40
  D) 10
  Show Answer
  The correct answer is A .
• Question 638: The angle between latitudes 30^oS and 13^oN is Options:
  A) 17^o
  B) 33^o
  C) 43^o
  D) 53^o
  Show Answer
  The correct answer is C .
• Question 639:

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

  The median of the distribution above is

  Options:
  A) 4.0
  B) 3.4
  C) 3.2
  D) 3.0
  Show Answer
  The correct answer is B .
• Question 640:

  If A = { 1, 2, 3, 4, 5, 6}, B = { 2, 4, 6, 8 }. Find (A B) ⋃ (B A).

  Options:
  A) {1, 3, 5, 8}
  B) {8}
  C) {1, 2, 3, 4, 5, 6, 8}
  D) {1, 3, 5}
  Show Answer
  The correct answer is A .