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: Twenty girls and y boys sat on an examination. The mean marks obtained by the girls and boys were 52 and 57 respectively. if the total score for both girls and boys was 2950, find y. Options:
  A) 51
  B) 48
  C) 30
  D) 25
  E) 18
  Show Answer
  The correct answer is C .
• Question 1832: 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 1833:

  A sector of a circle has an area of 55 cm². If the radius of the circle is 10 cm, calculate the angle of the sector. [π = 22/7]

  Options:
  A) 45${}^{\circ }$
  B) 63${}^{\circ }$
  C) 75${}^{\circ }$
  D) 90${}^{\circ }$
  Show Answer
  The correct answer is B .
• Question 1834:

  

  PQ is parallel to RS. Calculate the value of x.

  Options:
  A) 20${}^{\circ }$
  B) 40${}^{\circ }$
  C) 60${}^{\circ }$
  D) 80${}^{\circ }$
  E) 100${}^{\circ }$
  Show Answer
  The correct answer is B .
• Question 1835:

  

  The histogram above represents the number of candidates that sat for Mathematics examination in a school. How many candidate scored more than 50 marks?

  Options:
  A) 80
  B) 95
  C) 100
  D) 115
  Show Answer
  The correct answer is B .
• Question 1836: The locus of a point equidistant from the intersection of lines 3x - 7y + 7 = 0 and 4x - 6y + 1 = 0 is a Options:
  A) line parallel to 7x + 13y + 8 = 0
  B) circle
  C) semicircle
  D) bisector of the line 7x + 13y + 8 = 0
  Show Answer
  The correct answer is A .
• Question 1837: 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 1838:

  Express the product of 0.0014 and 0.011 in standard form

  Options:
  A) 1.54 x 10${}^{-2}$
  B) 1.54 x 10${}^{-3}$
  C) 1.54 x 10${}^{-2}$
  D) 1.54 x 10${}^{-5}$
  Show Answer
  The correct answer is D .
• Question 1839:

  Given that $\theta$ is an acute angle and sin $\theta$ = $\frac{m}{n}$, find cos $\theta$

  Options:
  A) $\frac{\sqrt{n^2-m^2}}{m}$
  B) $\frac{\sqrt{(n+m)(n-m)}}{n}$
  C) $\frac{m}{\sqrt{n^2-m^2}}$
  D) $\sqrt{\frac{n}{n^2-m^2}}$
  Show Answer
  The correct answer is B .
• Question 1840:

  

  PMN and PQR are two secants of the circle MQTRN and PT is a tangent. If PM = 5cm, PN = 12cm and PQ = 4.8cm, calculate the respective lengths of PR and PT in centimeters

  Options:
  A) 7.3, 5.9
  B) 7.7, 12.5
  C) 12.5, 7.7
  D) 5.9, 7.3
  Show Answer
  The correct answer is C .