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 1031: By selling 20 oranges for ₦1.35 a trader makes a profit of 8%. What is his percentage gain or loss if he sells the same 20 oranges for ₦1.10? Options:
  A) 8%
  B) 10%
  C) 12%
  D) 15%
  Show Answer
  The correct answer is C .
• Question 1032: A sector of angle 120° is cut out from a circle of radius 13.5cm. what area of the circle is remaining ? (π = $\frac{22}{7}$) Options:
  A) 14.1cm²
  B) 95.5cm²
  C) 190.9cm²
  D) 381.9cm²
  E) 763.7cm²
  Show Answer
  The correct answer is D .
• Question 1033:

  If the simple interest on a sum of money invested at 3% per annum for 2$\frac{1}{2}$  years is ₦123, find the principal.

  Options:
  A) ₦676.50
  B) ₦820
  C) ₦1,640
  D) ₦4,920
  Show Answer
  The correct answer is C .
• Question 1034: 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 1035: If t varies inversely as the cube of s, and t = 24, when s = 3, find t when s = 2 Options:
  A) 8
  B) 24
  C) 27
  D) 81
  E) 648
  Show Answer
  The correct answer is D .
• Question 1036: Calculate the perimeter, in cm, of a sector of a circle of radius 8cm and angle 45^o Options:
  A) 2$\pi$
  B) 8 + 2$\pi$
  C) 16 + 2$\pi$
  D) 16 + 16$\pi$
  Show Answer
  The correct answer is C .
• Question 1037: Simplify ($\frac{1}{\sqrt{5}+\sqrt{3}}-\frac{1}{\sqrt{5}-\sqrt{3}}$ x $\frac{1}{\sqrt{3}}$) Options:
  A) $\frac{\sqrt{3}}{\sqrt{5}}$
  B) $\frac{2\sqrt{3}}{7}$
  C) -2
  D) -1
  Show Answer
  The correct answer is B .
• Question 1038:

  Given $\sin 58°=\cos p°$, find p.

  Options:
  A) 48°
  B) 58°
  C) 32°
  D) 52°
  Show Answer
  The correct answer is C .
• Question 1039: If x + 1 is a factor of x³ + 3x² + kx + 4, find the value of k Options:
  A) 6
  B) -6
  C) 8
  D) -8
  Show Answer
  The correct answer is A .
• Question 1040: If $\left|\begin{array}{cc}x& 3\\ 2& 7\end{array}\right|$ = 15, find the value of x Options:
  A) 4
  B) 5
  C) 2
  D) 3
  Show Answer
  The correct answer is D .