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 681: If y = (2x + 1)³, find $\frac{dy}{dx}$ Options:
  A) 6(2x + 1)
  B) 3(2x + 1)
  C) 6(2x + 1)²
  D) 2(2x + 1)²
  Show Answer
  The correct answer is C .
• Question 682: Simplify $\frac{(a^2-\frac{1}{a})+(a^{\frac{4}{3}}+a^{\frac{2}{3}})}{a^2{\frac{1}{a}}^2}$ Options:
  A) a^{$\frac{2}{3}$}
  B) a^{-$\frac{1}{3}$}
  C) a2 + 1
  D) a
  E) a^{$\frac{1}{3}$}
  Show Answer
  The correct answer is E .
• Question 683: Make Q the subject of the formula when L = $\frac{4}{3}$ m$\sqrt{PQ}$ Options:
  A) $\frac{9L^2}{16m^{2}P}$
  B) $\frac{3L}{4m\sqrt{P}}$
  C) $\frac{\sqrt{3L}}{4mP}$
  D) $\frac{3L^2}{16m^{2}P}$
  Show Answer
  The correct answer is A .
• Question 684: If x, y can take values from the set (1, 2, 3, 4), find the probability that the product of x and y is not greater than 6 Options:
  A) $\frac{5}{8}$
  B) $\frac{5}{16}$
  C) $\frac{1}{2}$
  D) $\frac{3}{8}$
  Show Answer
  The correct answer is A .
• Question 685: A man bought wrist watch for ₦150 but was only able to sell it for ₦120. Find the loss per cent on the transaction Options:
  A) 25%
  B) 11%
  C) 20%
  D) 80%
  E) 30%
  Show Answer
  The correct answer is C .
• Question 686: Express $\frac{5x-12}{(x-2)(x-3)}$ in partial fractions Options:
  A) $\frac{2}{x-2}-\frac{3}{x-3}$
  B) $\frac{2}{x-2}+\frac{3}{x-3}$
  C) $\frac{2}{x-2}-\frac{3}{x-2}$
  D) $\frac{5}{x-3}-\frac{4}{x-2}$
  Show Answer
  The correct answer is B .
• Question 687: Solve the equations
  m² + n² = 29
  m + n = 7 Options:
  A) (2, 3) and ( 3, 5)
  B) (2, 5) and (5, 2)
  C) (5, 2) and ( 5, 3)
  D) (5, 3) and (3, 5)
  Show Answer
  The correct answer is B .
• Question 688: A man with an annual salary of ₦2000, has allowances of ₦600. If Income Tax is 5%, how much tax does he pay each year? Options:
  A) 15
  B) 20
  C) 30
  D) 25
  Show Answer
  The correct answer is C .
• Question 689: Simplify $\frac{5^x\times {25}^{x-1}}{{125}^{x-1}}$ Options:
  A) 5^{2x + 1}
  B) 5^{x + 1}
  C) 5^-5
  D) 5²
  E) 5³
  Show Answer
  The correct answer is C .
• Question 690:

  Below are the scores of a group of students in a test:

  $\begin{array}{ccccccc}Scores& 1& 2& 3& 4& 5& 6\\ \text{No. of students}& 1& 4& 5& 6& x& 2\end{array}$

  If the average scores is 3.5, find the value of x.

  Options:
  A) 1
  B) 2
  C) 3
  D) 4
  Show Answer
  The correct answer is B .