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 1831: PQR is a triangle in which PQ = 10cm and QPR = 60^oS is a point equidistant from P and Q. Also S is a point equidistant from PQ and PR. If U is the foot of the perpendicular from S on PR, find the length SU in cm to one decimal place Options:
  A) 2.7
  B) 4.33
  C) 3.1
  D) 3.3
  Show Answer
  The correct answer is B .
• Question 1832:

  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 1833: In a regular polygon, each interior angle doubles its corresponding exterior angle. Find the number of sides of the polygon. Options:
  A) 8
  B) 6
  C) 4
  D) 3
  Show Answer
  The correct answer is B .
• Question 1834: If 0.0000152 x 0.042 = A x 10⁸, where 1 $\le$ A < 10, find A and B. Options:
  A) A = 9, B = 6.38
  B) A = 6.38, B = -9
  C) A = -6.38, B = -9
  D) A = -9, B = -6.38
  Show Answer
  The correct answer is B .
• Question 1835: A rectangular polygon has 150^o as the size of each interior angle. How many sides has the polygon? Options:
  A) 12
  B) 10
  C) 9
  D) 8
  Show Answer
  The correct answer is A .
• Question 1836:

  Find the probability that a number selected at random from 21 to 34 is a multiple of 3

  Options:
  A) $\frac{3}{11}$
  B) $\frac{2}{9}$
  C) $\frac{5}{14}$
  D) $\frac{5}{13}$
  Show Answer
  The correct answer is C .
• Question 1837: What factor is common to all the expressions x² - x, 2x² + x - 1 and x² - 1? Options:
  A) x
  B) x + 1
  C) x - 1
  D) No common factor
  E) (2x - 1)
  Show Answer
  The correct answer is D .
• Question 1838:

  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 .
• Question 1839: 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 1840:

  The smallest number such that when it is divided by 3 has a remainder of 6 and when it is divided by 9, has a remainder of 7 is

  Options:
  A) 387
  B) 493
  C) 502
  D) 441
  E) 634
  Show Answer
  The correct answer is C .