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 841:

  The difference between an exterior angle of (n - 1) sided regular polygon and an exterior angle of (n + 2) sided regular polygon is 6${}^o$, then the value of "n" is

  Options:
  A) 11
  B) 13
  C) 12
  D) 14
  Show Answer
  The correct answer is B .
• Question 842: A polynomial in x whose roots are $\frac{4}{3}$ and -$\frac{2}{5}$ is Options:
  A) 15x² - 11x - 12
  B) 15x² + 11x - 12
  C) 12x² - x - 12
  D) 12x² + 11x - 15
  Show Answer
  The correct answer is A .
• Question 843: If x, y can take values from the set (1, 2, 3, 4), find the probability that the product of x and y is not greater than 6 Options:
  A) $\frac{5}{8}$
  B) $\frac{5}{16}$
  C) $\frac{1}{2}$
  D) $\frac{3}{8}$
  Show Answer
  The correct answer is A .
• Question 844: Find the simple interest rate percent per annum at which ₦1,000 accumulates to ₦1,240 in 3 years Options:
  A) 6%
  B) 8%
  C) 10%
  D) 12%
  Show Answer
  The correct answer is B .
• Question 845:

  Let P = {1, 2, u, v, w, x}; Q = {2, 3, u, v, w, 5, 6, y} and R = {2, 3, 4, v, x, y}.

  Determine (P-Q) ∩ R

  Options:
  A) {1, x}
  B) {x y}
  C) {x}
  D) ɸ
  Show Answer
  The correct answer is C .
• Question 846: If dy/dx = 2x - 3 and y = 3 when x = 0, find y in terms of x. Options:
  A) 2x² - 3x
  B) x² - 3x
  C) x² - 3x - 3
  D) x² - 3x + 3
  Show Answer
  The correct answer is D .
• Question 847:

  $\frac{d}{dx}$ cos(3x² - 2x) is equal to

  Options:
  A) -sin(6x - 2)
  B) -sin(3x² - 2x)dx
  C) (6x - 2) sin(3x² - 2x)
  D) -(6x - 2)sin(3x² - 2x)
  Show Answer
  The correct answer is D .
• Question 848: Find the mean deviation of 20, 25, 21, 27, 28, 29, to the nearest whole number Options:
  A) 2
  B) 3
  C) 4
  D) 5
  E) 6
  Show Answer
  The correct answer is B .
• Question 849: Solve for x in the quadratic equation. 2x² + 12x + 10 = 0 Options:
  A) x = -5, -1
  B) x = -5,1
  C) x = -3, -2
  D) x = 3, 2
  E) x = 6, 5
  Show Answer
  The correct answer is A .
• Question 850: Factorize completely 81a⁴ - 16b⁴ Options:
  A) (3a + 2b)(2a - 3b)(9a² + 4b²)
  B) (3a - 2b)(2a - 3b)(4a² - 9b²)
  C) (3a - 2b)(3a - 2b)(9a² - 4b²)
  D) (6a - 2b)(8a - 3b)(4a³ - 9b²)
  Show Answer
  The correct answer is C .