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 2201: Twenty girls and y boys sat on an examination. The mean marks obtained by the girls and boys were 52 and 57 respectively. if the total score for both girls and boys was 2950, find y. Options:
  A) 51
  B) 48
  C) 30
  D) 25
  E) 18
  Show Answer
  The correct answer is C .
• Question 2202: For what values of x is the curve y = $\frac{x^2+3}{x+4}$ decreasing?
  Options:
  A) -3 < x $\le$ 0
  B) -3 $\ge$ x < 0
  C) 0 < x < 3
  D) 0 $\le$ x $\le$ 3
  Show Answer
  The correct answer is D .
• Question 2203:

  Find the missing numerator $\frac{5}{x+1}$ - $\frac{3}{1-x}$ - $\frac{7x-1}{x^2-1}$ = x + 1

  Options:
  A) -1
  B) x - 1
  C) $\frac{3(1-5x)}{x-1}$
  D) $\frac{1}{(x+1)}$
  E) 3(1 - 5x)
  Show Answer
  The correct answer is D .
• Question 2204: The midpoint of P(x, y) and Q(8, 6). Find x and y. midpoint = (5, 8) Options:
  A) (2, 10)
  B) (2, 8)
  C) (2, 12)
  D) (2, 6)
  Show Answer
  The correct answer is A .
• Question 2205: y = is inversely proportional to x and y = 4 when x = 1/2. Find x when y = 10. Options:
  A) 2
  B) 10
  C) 1/5
  D) 1/10
  Show Answer
  The correct answer is C .
• Question 2206: List the integral values of x which satisfy the inequality -1 < 5 - 2x $\ge$ 7. Options:
  A) -1, 0, 1, 2
  B) 0, 1, 2, 3
  C) -0, 1, 2, 3
  D) -1, 0, 2, 3
  Show Answer
  The correct answer is A .
• Question 2207:

  Find the variance of the numbers k, k+1, k+2.

  Options:
  A) $\frac{2}{3}$
  B) 1
  C) k + 1
  D) (k + 1)²
  Show Answer
  The correct answer is A .
• Question 2208: Divide x³ - 2x² - 5x + 6 by (x - 1) Options:
  A) x² - x - 6
  B) x² - 5x + 6
  C) x² - 7x + 6
  D) x² - 5x - 6
  Show Answer
  The correct answer is A .
• Question 2209: The solution to the simultaneous equations 3x + 5y = 4, 4x + 3y = 5 is Options:
  A) ($\frac{-13}{11},\frac{1}{11}$)
  B) ($\frac{13}{11},\frac{1}{11}$)
  C) ($\frac{13}{11},\frac{-1}{11}$)
  D) ($\frac{11}{13},\frac{1}{11}$)
  E) (13, 11)
  Show Answer
  The correct answer is B .
• Question 2210: If U = {x : x is an integer and 1 ≤ x ≤ }
  E¹ = {x: x is a multiple of 3}
  E² = {x: x is a multiple of 4} and an integer is picked at random from U, find the probability that it is not in E² Options:
  A) $\frac{3}{4}$
  B) $\frac{3}{10}$
  C) $\frac{1}{4}$
  D) $\frac{1}{20}$
  Show Answer
  The correct answer is A .