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 691: Which of the following angular inequalities defines an obtuse angle?
  Options:
  A) 0° < x < 90°
  B) 0° ≤ x > 180°
  C) 90° < x < 180°
  D) 90° ≤ x < 180°
  E) 90° > x < 180°
  Show Answer
  The correct answer is C .
• Question 692: make U the subject of the formula S = $\sqrt{\frac{6}{u}-\frac{w}{2}}$ Options:
  A) u = $\frac{12}{2s^2}$
  B) u = $\frac{12}{2s+w}$
  C) u = $\frac{12}{2s^2+w}$
  D) u = $\frac{12}{2s^2}$ + w
  Show Answer
  The correct answer is C .
• Question 693: If the sum of the 8th and 9th terms of an arithmetic progression is 72 and the 4th term is -6, find the common difference Options:
  A) 4
  B) 8
  C) 6$\frac{2}{3}$
  D) 9$\frac{1}{3}$
  Show Answer
  The correct answer is D .
• Question 694: If x varies directly as √n and x = 9 when n = 9, find x when n = (17/9) Options:
  A) 4
  B) 27
  C) √3
  D) √17
  Show Answer
  The correct answer is D .
• Question 695:

  

  In the figure, PQR is a semicircle. Calculate the area of the shaded region.

  Options:
  A) 125^{$\frac{2}{7}$}cm²
  B) 149^{$\frac{2}{7}$}cm²
  C) 234^{$\frac{1}{7}$}cm²
  D) 267^{$\frac{1}{2}$}cm²
  Show Answer
  The correct answer is A .
• Question 696:

  

  In the figure, find PRQ

  Options:
  A) 66$\frac{1}{2}$${}^{\circ }$
  B) 62$\frac{1}{2}$${}^{\circ }$
  C) 125${}^{\circ }$
  D) 105${}^{\circ }$
  E) 65${}^{\circ }$
  Show Answer
  The correct answer is B .
• Question 697: What is the mean deviation of 3, 5, 8, 11, 12 and 21? Options:
  A) 4.7
  B) 60
  C) 3.7
  D) 10
  Show Answer
  The correct answer is A .
• Question 698:

  If pq + 1 = q² and t = $\frac{1}{p}$ - $\frac{1}{pq}$ express t in terms of q

  Options:
  A) $\frac{1}{p-q}$
  B) $\frac{1}{q-1}$
  C) $\frac{1}{q+1}$
  D) $1+q$
  E) $\frac{1}{1-q}$
  Show Answer
  The correct answer is C .
• Question 699:

  

  In the diagram above calculate the value of x

  Options:
  A) 60${}^{\circ }$
  B) 100${}^{\circ }$
  C) 120${}^{\circ }$
  D) 140${}^{\circ }$
  Show Answer
  The correct answer is C .
• Question 700:

  Evaluate: 16${}^{0.16}$ × 16${}^{0.04}$ × 2${}^{0.2}$

  Options:
  A) 2
  B) 0
  C) 2${}^0$
  D) $\frac{1}{2}$
  Show Answer
  The correct answer is A .