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 801:

  A circle has a radius of 13 cm with a chord 12 cm away from the centre of the circle. Calculate the length of the chord.

  Options:
  A) 16 cm
  B) 8 cm
  C) 5 cm
  D) 10 cm
  Show Answer
  The correct answer is D .
• Question 802: The chances of Usman and Dele passing a Mathematics test are 12 and 13 respectively. What is the probability that neither of them passes the test? Options:
  A) $\frac{3}{5}$
  B) $\frac{2}{5}$
  C) $\frac{4}{15}$
  D) $\frac{1}{5}$
  E) $\frac{2}{15}$
  Show Answer
  The correct answer is C .
• Question 803:

  If (x - a) is a factor of bx - ax + x², find the other factor.

  Options:
  A) (x + b)
  B) (x - b)
  C) (a + b)
  D) (a - b)
  Show Answer
  The correct answer is A .
• Question 804: Find r, if 6r7₈ = 511₉ Options:
  A) 3
  B) 2
  C) 6
  D) 5
  Show Answer
  The correct answer is A .
• Question 805: Factorize completely (x² + x)² - (2x + 2)² Options:
  A) (x + 1)(x + 2)(x - 2)
  B) (x + 1) 2(x + 2) (x - 2)
  C) (x + 1)² (x + 2)²
  D) (x + 1)² (x + 2)(x - 2)
  Show Answer
  The correct answer is D .
• Question 806: A circle with radius 5cm has its radius increasing at the rate of 0.2m/s. What will be the corresponding increase in the area? Options:
  A) 2π
  B) 5π
  C) π
  D) 4π
  Show Answer
  The correct answer is A .
• Question 807: Given that the first and forth terms of G.P are 6 and 162 respectively, find the sum of the first three terms of the progression Options:
  A) 27
  B) 8
  C) 78
  D) 48
  Show Answer
  The correct answer is C .
• Question 808: The cost of kerosine per liter increase from N60 to N85. What is the percentage rate of increase? Options:
  A) 42%
  B) 41%
  C) 40%
  D) 25%
  Show Answer
  The correct answer is A .
• Question 809: Calculate the area of a parallelogram whose diagonals are of length 8cm and 12cm and intersect at an angle of 135° Options:
  A) 271.5cm²
  B) 135.8cm²
  C) 96.0cm²
  D) 48.0cm²
  E) 33.9cm²
  Show Answer
  The correct answer is E .
• Question 810: Which of the formula below represents the general terms of the following set of numbers(-1, $\frac{2}{3}$, -$\frac{1}{2}$, $\frac{2}{5}$......) for n = 1, 2, 3, 4.......? Options:
  A) $\frac{2}{n+1}$
  B) (-1)^{n + 1} $\frac{2}{n+1}$
  C) (-1)ⁿ $\frac{2}{n+1}$
  D) $\frac{n}{2n-1}$
  E) (-1)ⁿ$\frac{n}{2n-1}$
  Show Answer
  The correct answer is C .