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 2121:

  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 2122:

  I. Rectangular bars of equal width

  II. The height of each rectangular bar is proportional to the frequency of the corresponding class interval.

  III. Rectangular bars have common sides with no gaps in between

  A histogram is described completely by

  Options:
  A) I, II and III
  B) I and II
  C) II and III
  D) I and III
  Show Answer
  The correct answer is A .
• Question 2123: A binary operation defines $\ast$ on the set of positive integers is such that x $\ast$ y = 2x - 3y + 2 for all positive integers x and y. The binary operation is Options:
  A) commutative and closed on the set of positive integers
  B) neither commutative nor closed on the set of positive integers
  C) commutative but not closed on the set of positive integers
  D) not commutative but closed on the set of positive integers
  Show Answer
  The correct answer is B .
• Question 2124: If U = (s, p, i, e, n, d, o, u, r), X = (s, p, e, n, d) Y = (s, e, n, o, u), Z = (p, n, o, u, r) find X ∩ Y ∪ Z Options:
  A) (p, o, u, r)
  B) (s, p, d, r)
  C) (p, n, d)
  D) (n, d, u)
  Show Answer
  The correct answer is C .
• Question 2125:

  A committee of 5 people is to be chosen from a group of 6 men and 4 women. How many committees are possible if there is to be a majority of women?

  Options:
  A) 60
  B) 15
  C) 66
  D) 4
  Show Answer
  The correct answer is C .
• Question 2126: Factorize 1 - (a - b)² Options:
  A) (1 - a - b)(1 - a + b)
  B) (1 + a - b)(1 - a + b)
  C) (1 - a + b)(1 - a + b)
  D) (1 + a + b)(1 + a + b)
  Show Answer
  The correct answer is B .
• Question 2127: A man sells his new brand car for ₦420,000 at a gain of 15%. What did it cost him? Options:
  A) ₦410,000
  B) ₦365,217
  C) ₦157,250
  D) ₦257,000
  Show Answer
  The correct answer is B .
• Question 2128:

  The locus of a point equidistant from two intersecting lines is

  Options:
  A) where the sum of the distances of two focal points is fixed
  B) the collection of points that are equally distant from a fixed point and a line
  C) the perpendicular bisector of the lines
  D) pair of bisectors of the angles between the two lines
  Show Answer
  The correct answer is D .
• Question 2129:

  The smallest number such that when it is divided by 3 has a remainder of 6 and when it is divided by 9, has a remainder of 7 is

  Options:
  A) 387
  B) 493
  C) 502
  D) 441
  E) 634
  Show Answer
  The correct answer is C .
• Question 2130: Calculate the area of a parallelogram whose diagonals are of length 8cm and 12cm and intersect at an angle of 135° Options:
  A) 271.5cm²
  B) 135.8cm²
  C) 96.0cm²
  D) 48.0cm²
  E) 33.9cm²
  Show Answer
  The correct answer is E .