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 451: Simplify $\frac{3^{-5n}}{9^{1-n}}\times {27}^{n+1}$ Options:
  A) 3²
  B) 3³
  C) 3⁵
  D) 3
  Show Answer
  The correct answer is D .
• Question 452: Find the derivative of $\frac{\sin \theta }{\cos \theta }$ Options:
  A) sec² $\theta$
  B) tan $\theta$ cosec $\theta$
  C) cosec $\theta$sec $\theta$
  D) cosec²$\theta$
  Show Answer
  The correct answer is A .
• Question 453: A woman buys 270 oranges for ₦1800.00 and seels at 5 for ₦40.00. What is her profit? Options:
  A) ₦2,160.00
  B) ₦1, 620.00
  C) ₦630.00
  D) ₦360.00
  Show Answer
  The correct answer is D .
• Question 454: Make x the subject of the equation
  s = 2 + $\frac{t}{5}$(x + ⅗y) Options:
  A) x = 5[(s − 2) ÷ t] + 3yt
  B) x = 25[(s − 2) ÷ t] − 3ty
  C) x = [1 ÷ (s − 2)3ty]
  D) x = [5(s − 2) 2 ÷ 3ty] × t
  Show Answer
  The correct answer is B .
• Question 455: If a function is defined by $f(x+1)=3x^2-x+4$, find $f(0)$ Options:
  A) 4
  B) 6
  C) 8
  D) 2
  Show Answer
  The correct answer is D .
• Question 456: Find the mean deviation of 20, 25, 21, 27, 28, 29, to the nearest whole number Options:
  A) 2
  B) 3
  C) 4
  D) 5
  E) 6
  Show Answer
  The correct answer is B .
• Question 457: The ninary operation * is defined on the set of integers p and q by p*q = pq + p + q. Find 2 * (3 * 4). Options:
  A) 59
  B) 19
  C) 67
  D) 38
  Show Answer
  The correct answer is A .
• Question 458: A bag contains 4 blue and 8 red identical balls. If two balls are picked at random with replacement, what is the probability of picking two balls of different colours? Options:
  A) 1
  B) $\frac{13}{26}$
  C) $\frac{5}{18}$
  D) $\frac{4}{9}$
  E) $\frac{2}{9}$
  Show Answer
  The correct answer is D .
• Question 459: Find the probability of selecting a figure which is a parallelogram from a square, a rectangle, a rhombus, a kite and a trapezium Options:
  A) $\frac{3}{5}$
  B) $\frac{2}{5}$
  C) $\frac{4}{5}$
  D) $\frac{1}{5}$
  Show Answer
  The correct answer is A .
• Question 460:

  A man invested a sum of ₦280.00 partly at 5% and partly at 4%. if the total interest is ₦12.90 per annum, find the amount invested at 5%.

  Options:
  A) 14.00
  B) 120.00
  C) 140.00
  D) 160.00
  Show Answer
  The correct answer is D .