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 1541: If a car travels 120km on 45 litres of petrol, how much petrol is needed for a journey of 600km? Options:
  A) 720 litres
  B) 160 litres
  C) 225 litres
  D) 960 litres
  Show Answer
  The correct answer is C .
• Question 1542: y is inversely proportional to x and y and 6 when x = 7. Find the constant of the variation Options:
  A) 47
  B) 42
  C) 54
  D) 46
  Show Answer
  The correct answer is B .
• Question 1543: If y = x sin x, find $\frac{\delta y}{\delta x}$ Options:
  A) sin x - cos x
  B) cos x - x sin x
  C) cos x + x sin x
  D) sin x + x cos x
  Show Answer
  The correct answer is D .
• Question 1544: A solid cylinder of radius 3cm has a total surface area of 36$\pi$cm². Find its height Options:
  A) 2cm
  B) 3cm
  C) 4cm
  D) 5cm
  E) 6cm
  Show Answer
  The correct answer is B .
• Question 1545: What is the mean of the data t, 2t - 1, t - 2, 2t - 1, 4t and 2t + 2? Options:
  A) 2t
  B) 2t - 1
  C) $\frac{2}{3}$t + 1
  D) 2t - $\frac{1}{3}$
  Show Answer
  The correct answer is D .
• Question 1546: The sum of the roots of a quadratic equation $\frac{5}{2}$ and product of its roots is 4. The quadratic equation is Options:
  A) $2x^2+5x+8=0$
  B) $2x^2-5x+8=0$
  C) $2x^2-8x+5=0$
  D) $2x^2+8x-5=0$
  E) $2x^2+5x-8=0$
  Show Answer
  The correct answer is B .
• Question 1547: Solve $\frac{1}{x+1}$ - $\frac{1}{x+3}$ = $\frac{1}{4}$ Options:
  A) x = -1 or 3
  B) x = 1 or 3
  C) x = 1 or -5
  D) x = -1 or 5
  E) x = -1 or -3
  Show Answer
  The correct answer is C .
• Question 1548:

  The probability of an outcome A is 1/6. The probability of the B outcome is 1/4. If the probability of A or B or both is 1/12, what is the probability of both outcomes A and B?

  Options:
  A) 1/2
  B) 1/3
  C) 2/5
  D) 3/4
  Show Answer
  The correct answer is B .
• Question 1549:

  If the universal set μ = {x : 1 ≤ x ≤ 20} and

  A = {y : multiple of 3}

  B = |z : odd numbers}

  Find A ∩ B

  Options:
  A) {1, 3, 6}
  B) {3, 5, 9, 12}
  C) {3, 9, 15}
  D) {2, 3, 9}
  Show Answer
  The correct answer is C .
• Question 1550: The binary operation on the set of real numbers is defined by m*n = $\frac{mn}{2}$ for all m, n $\in$ R. If the identity element is 2, find the inverse of -5 Options:
  A) $-\frac{4}{5}$
  B) $-\frac{2}{5}$
  C) 4
  D) 5
  Show Answer
  The correct answer is A .