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 521: On the pie chart, there are four sectors of which three angles are 45${}^{\circ }$, 90${}^{\circ }$ and 135${}^{\circ }$. If the smallest sector represents N28.00, how much is the largest sector? Options:
  A) N96.00
  B) N84.00
  C) N48.00
  D) N42.00
  Show Answer
  The correct answer is B .
• Question 522: If y = 3 cos(x/3), find dy/dx when x = (3π/2) Options:
  A) 1
  B) -3
  C) 2
  D) -1
  Show Answer
  The correct answer is D .
• Question 523: A binary operation ⊕ on real numbers is defined by x⊕y = xy + x + y for any two real numbers x and y. The value of (-³/₄)⊕6 is Options:
  A) ³/₄
  B) -⁹/₂
  C) ⁴⁵/₄
  D) -³/₄
  Show Answer
  The correct answer is A .
• Question 524: Evaluate ∫sin 3x dx Options:
  A) (2/3) cos 3x + c
  B) (1/3) cos 3x + c
  C) (-1/3) cos 3x + c
  D) (-2/3) cos 3x + c
  Show Answer
  The correct answer is C .
• Question 525: Convert 241 in base 5 to base 8, Options:
  A) 71₈
  B) 107₈
  C) 176₈
  D) 241₈
  Show Answer
  The correct answer is B .
• Question 526:

  What will be the result obtained when the numerator of $\frac{96}{50}$ is decreased by 37.5% and its denominator decreased by 20%.

  Options:
  A) 1.5
  B) $\frac{5}{2}$
  C) $\frac{96}{48}$
  D) 0.5
  Show Answer
  The correct answer is A .
• Question 527: Find the roots of the equation 10x² - 13x - 3 = 0 Options:
  A) x = $\frac{3}{5}$ or -$\frac{1}{2}$
  B) x = $\frac{3}{10}$ or -1
  C) x = $\frac{3}{10}$ or 1
  D) x = $\frac{1}{5}$ or $\frac{-3}{2}$
  E) x = -$\frac{1}{5}$ or $\frac{3}{2}$
  Show Answer
  The correct answer is E .
• Question 528: Find x if (x_base4)² = 100100_base2 Options:
  A) 6
  B) 12
  C) 100
  D) 210
  E) 110
  Show Answer
  The correct answer is B .
• Question 529: Find the equation of a line perpendicular to line 2y = 5x + 4 which passes through (4, 2). Options:
  A) 5y - 2x -18 = 0
  B) 5y + 2x - 18 = 0
  C) 5y - 2x + 18 = 0
  D) 5y + 2x - 2 = 0
  Show Answer
  The correct answer is B .
• Question 530: Find the probability that a number selected at random from 41 to 56 is a multiply of 9 Options:
  A) $\frac{1}{8}$
  B) $\frac{2}{15}$
  C) $\frac{3}{16}$
  D) $\frac{7}{8}$
  Show Answer
  The correct answer is A .