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 801: Factorize 4x² - 9y² + 20x + 25 Options:
  A) (2x -3y + 5)(2x - 3y - 5)
  B) (2x - 3y)(2x + 3y)
  C) (2x - 3y +5)(2x + 3y + 5)
  D) (2x + 5)(2x - 9y +5)
  Show Answer
  The correct answer is C .
• Question 802: A regular polygon of n sides has 160^o as the size of each interior angle. Find n Options:
  A) 18
  B) 16
  C) 14
  D) 12
  Show Answer
  The correct answer is A .
• Question 803:

  

  Triangle SPT is the solution of the linear inequalities

  Options:
  A) 2y - x - 2 ≤ 0, y + 2x + 2 ≥ 0, -2 ≤ x ≤ - 1
  B) -2 ≤ x ≤ 2, y ≥ 0, y + 2x + 2 ≤ 0, x ≤ 0
  C) 2y - x - 2 ≤ 0, y + 2x + 2 ≤ 0, y ≥ 0, x ≤ 0
  D) 2y - x - 2 ≥ 0, y + 2x + 2 ≤ 0, x ≤ 0
  Show Answer
  The correct answer is A .
• Question 804: If k + 1; 2k - 1, 3k + 1 are three consecutive terms of a geometric progression, find the possible values of the common ratio Options:
  A) 0, 8
  B) -1, $\frac{5}{3}$
  C) 2, 3
  D) 1, -1
  Show Answer
  The correct answer is B .
• Question 805:

  A cylinder pipe, made of metal is 3cm thick.If the internal radius of the pipe is 10cm.Find the volume of metal used in making 3m of the pipe.

  Options:
  A) 153$\pi$cm³
  B) 207$\pi$cm³
  C) 15 300$\pi$cm³
  D) 20 700$\pi$cm³
  Show Answer
  The correct answer is D .
• Question 806: Find $\alpha$ and $\beta$ such that x^{$\frac{3}{8}$} x y^{$\frac{-6}{7}$} x ($\frac{y^{\frac{9}{7}}}{x^{\frac{45}{8}}}$)^{$\frac{1}{9}$} = $\frac{y^{\alpha }}{y^{\beta }}$ Options:
  A) $\alpha$ = 1, $\beta$ = $\frac{5}{7}$
  B) $\alpha$= 1, $\beta$ = -$\frac{5}{7}$
  C) $\alpha$= $\frac{3}{5}$, $\beta$ = -6
  D) $\alpha$= 1, $\beta$ = -$\frac{3}{5}$
  Show Answer
  The correct answer is A .
• Question 807: Find the value of (0.006)³ + (0.004)³ in standard form Options:
  A) 2.8 x 10^-9
  B) 2.8 x 10^-7
  C) 2.8 x 10^-8
  D) 2.8 x 10^-6
  Show Answer
  The correct answer is B .
• Question 808:

  Find the area, to the nearest cm${}^2$, of the triangle whose sides are in the ratio 2 : 3 : 4 and whose perimeter is 180 cm.

  Options:
  A) 1162 cm${}^2$
  B) 1163 cm${}^2$
  C) 1160 cm${}^2$
  D) 1161 cm${}^2$
  Show Answer
  The correct answer is A .
• Question 809: When the expression pm² + qm + 1 is divided by (m - 1), it has a remainder is 4, Find p and q respectively Options:
  A) 2, -1
  B) -1, 2
  C) 3, -2
  D) -2, 3
  Show Answer
  The correct answer is B .
• Question 810: A cylindrical motor of height 12cm has uniform thickness of 2cm. If the diameter of its outer cross section is 10cm, Find the volume of the constituent material. (take $\pi$ = $\frac{22}{7}$ Options:
  A) $\frac{6600}{7}$cm³
  B) 270cm³
  C) 660cm³
  D) $\frac{4224}{7}$cm³
  E) $\frac{1980}{7}$cm³
  Show Answer
  The correct answer is D .