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 1361: Simplify $(\sqrt{6}+2{)}^2-(\sqrt{6}-2{)}^2$ Options:
  A) $2\sqrt{6}$
  B) $4\sqrt{6}$
  C) $8\sqrt{6}$
  D) $16\sqrt{6}$
  Show Answer
  The correct answer is C .
• Question 1362:

  If the volume of a frustrum is given as $V=\frac{\pi h}{3}(R^2+Rr+r^2)$, find $\frac{\mathrm{d}V}{\mathrm{d}R}$.

  Options:
  A) $\frac{\pi h}{3}(2R+r)$
  B) $2R+r+\frac{\pi h}{3}$
  C) $\frac{\pi h}{3}(2R^2+r+2r)$
  D) $\frac{2R^2}{3}\pi h$
  Show Answer
  The correct answer is A .
• Question 1363: Find the angle subtended at the centre of a circle by a chord which is equal in length to the radius of the circle Options:
  A) 30^o
  B) 45^o
  C) 60^o
  D) 90^o
  Show Answer
  The correct answer is C .
• Question 1364:

  $\frac{d}{dx}$ 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 1365:

  The acres for rice, pineapple, cassava, cocoa and palm oil in a certain district are given respectively as 2, 5, 3, 11 and 9. What is the angle of the sector of cassava in a pie chart?

  Options:
  A) 180${}^o$
  B) 36${}^o$
  C) 60${}^o$
  D) 108${}^o$
  Show Answer
  The correct answer is B .
• Question 1366: Find x if log₉x = 1.5 Options:
  A) 72.0
  B) 27.0
  C) 36.0
  D) 3.5
  E) 24.5
  Show Answer
  The correct answer is B .
• Question 1367: If $\frac{3e+f}{3f-e}$ = $\frac{2}{5}$, find the value of $\frac{e+3f}{f-3e}$ Options:
  A) $\frac{5}{2}$
  B) 1
  C) $\frac{26}{7}$
  D) $\frac{1}{3}$
  Show Answer
  The correct answer is C .
• Question 1368: A banking recipe calls for 2.5kg of sugar and 4.5kg of flour. With this recipe some cakes were baked Using 24.5kg of a mixture of sugar and flour. How much sugar was used? Options:
  A) 12.25kg
  B) 6.75kg
  C) 8.75kg
  D) 15.75kg
  E) 8.25kg
  Show Answer
  The correct answer is C .
• Question 1369: Factorize k² - 2kp + p². Options:
  A) (k +p)²
  B) (k - p)²
  C) k² + p²
  D) k² - p²
  Show Answer
  The correct answer is B .
• Question 1370:

  At what rate would a sum of N100.00 deposited for 5 years raise an interest of N7.50?

  Options:
  A) $\frac{1}{2}$%
  B) 2$\frac{1}{2}$%
  C) 1.5%
  D) 25%
  Show Answer
  The correct answer is C .