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: A number is chosen at random from 10 to 30 both inclusive. What is the probability that the number is divisible by 3? Options:
  A) $\frac{2}{15}$
  B) $\frac{1}{10}$
  C) $\frac{1}{3}$
  D) $\frac{2}{5}$
  Show Answer
  The correct answer is C .
• Question 1392:

  $\begin{array}{ccccc}x& 2& 4& 6& 8\\ f& 4& y& 6& 5\end{array}$

  If the mean of the above frequency distribution is 5.2, find y

  Options:
  A) 2, 1
  B) 1, 2
  C) 1, 5
  D) 5, 2
  Show Answer
  The correct answer is C .
• Question 1393: If log 10 to base 8 = X, evaluate log 5 to base 8 in terms of X. Options:
  A) $\frac{1}{2}$X
  B) X-$\frac{1}{4}$
  C) X-$\frac{1}{3}$
  D) X-$\frac{1}{2}$
  Show Answer
  The correct answer is C .
• Question 1394:

  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 1395: Find the value of k if y - 1 is a factor of y³ + 4y² + ky - 6 Options:
  A) -6
  B) -4
  C) O
  D) 1
  Show Answer
  The correct answer is D .
• Question 1396:

  If $4{\sin }^{2}x-3=0$, find the value of x, when 0° $\le$ x $\le$ 90°

  Options:
  A) 90°
  B) 45°
  C) 60°
  D) 30°
  Show Answer
  The correct answer is C .
• Question 1397: Find the total area of the surface of a solid cylinder whose base radius is 4cm and height is 5cm Options:
  A) 56$\pi$ cm²
  B) 72$\pi$ cm²
  C) 96$\pi$ cm²
  D) 192$\pi$ cm²
  Show Answer
  The correct answer is B .
• Question 1398: Increase 135 in the ratio 3:5 Options:
  A) 225
  B) 216
  C) 143
  D) 140
  E) 140
  Show Answer
  The correct answer is A .
• Question 1399: A chord is drawn 12cm away from the centre of a circle of radius 13cm. What is the length of the chord? Options:
  A) 169.00 cm
  B) 144.00 cm
  C) 25.00 cm
  D) 17.69 cm
  E) 10.00 cm
  Show Answer
  The correct answer is E .
• Question 1400: The solution of the quadratic equation px² + qx + b = 0 is Options:
  A) $\sqrt{\frac{-b\pm b^2-4ac}{2a}}$
  B) $\frac{-b\pm \sqrt{p^2-4pb}}{2a}$
  C) $\frac{-q\pm \sqrt{q^2-4bp}}{2p}$
  D) $\frac{-q\pm \sqrt{p^2-4bp}}{2p}$
  Show Answer
  The correct answer is C .