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 1391: Simplify $\frac{(\surd 12-\surd 3)}{(\surd 12+\surd 3)}$ Options:
  A) zero
  B) 1/3
  C) 3/5
  D) 1
  Show Answer
  The correct answer is B .
• Question 1392: What is the probability that a number chosen at random from the intergers between 1 and 10 inclusive is either a prime or a multiple of 3? Options:
  A) $\frac{7}{10}$
  B) $\frac{3}{5}$
  C) $\frac{4}{5}$
  D) $\frac{3}{10}$
  Show Answer
  The correct answer is B .
• Question 1393:

  A number is selected at random between 20 and 30, both numbers inclusive. Find the probability that the number is a prime.

  Options:
  A) $\frac{2}{11}$
  B) $\frac{5}{11}$
  C) $\frac{6}{11}$
  D) $\frac{8}{11}$
  Show Answer
  The correct answer is A .
• Question 1394: A man sells his new brand car for ₦420,000 at a gain of 15%. What did it cost him? Options:
  A) ₦410,000
  B) ₦365,217
  C) ₦157,250
  D) ₦257,000
  Show Answer
  The correct answer is B .
• Question 1395: If y = x cos x, find dy/dx Options:
  A) sin x - x cos x
  B) sin x + x cos x
  C) cos x + x sin x
  D) cos x - x sin x
  Show Answer
  The correct answer is D .
• Question 1396: The sum of the first n positive integers is Options:
  A) ¹/₂ n(n-1)
  B) n(n+1)
  C) n(n-1)
  D) ¹/₂ n(n-1)
  Show Answer
  The correct answer is D .
• Question 1397: Rationalize $\frac{5\sqrt{7}-7\sqrt{5}}{\sqrt{7}-\sqrt{5}}$ Options:
  A) -2 \sqrt{35}\)
  B) 4\sqrt{7}\) - 6$\sqrt{5}$
  C) -$\sqrt{35}$
  D) 4\sqrt{7}\) - 8$\sqrt{5}$
  E) $\sqrt{35}$
  Show Answer
  The correct answer is C .
• Question 1398:

  A rectangular plot of land has sides with lengths of 38 m and 52 m corrected to the nearest m. Find the range of the possible values of the area of the rectangle

  Options:
  A) 1931.25 m${}^2$ ≤ A < 2021.25 m${}^2$
  B) 1950 m${}^2$ ≤ A < 2002 m${}^2$
  C) 1957 m${}^2$ ≤ A < 1995 m${}^2$
  D) 1931.25 m${}^2$ ≥ A > 2021.25 m${}^2$
  Show Answer
  The correct answer is A .
• Question 1399:

  

  Triangle OPQ is the solution of the inequalities

  Options:
  A) x - 1 < 0, y + $\ge$ 0, y - x $\ge$ 0
  B) x + 1 $\le$ 0, y + x $\ge$ 0, y - x $\le$ 0
  C) x - 1 $\ge$ 0, y - x $\ge$ 0, y + x $\ge$ 0
  D) y + x $\ge$ 0, y - x $\le$ 0
  Show Answer
  The correct answer is B .
• Question 1400: The sum of the first n positive integers is Options:
  A) $\frac{1}{2}$(n + 1)
  B) n $\frac{1}{2}$(n + 1)
  C) n(n - 1)
  D) n(n + 1)
  Show Answer
  The correct answer is B .