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 2861: Bello chooses a number randomly from 1 to 10. What is the probability that it is either odd or prime? Options:
  A) $\frac{1}{10}$
  B) $\frac{2}{5}$
  C) $\frac{1}{2}$
  D) $\frac{3}{5}$
  E) $\frac{9}{10}$
  Show Answer
  The correct answer is D .
• Question 2862: If x + $\frac{1}{x}$ = 4, find x² + $\frac{1}{x^2}$ Options:
  A) 16
  B) 14
  C) 12
  D) 9
  Show Answer
  The correct answer is B .
• Question 2863: Simplify $\sqrt{\frac{(0.0023\ast 750)}{(0.00345\ast 1.25)}}$ Options:
  A) 15
  B) 20
  C) 40
  D) 75
  Show Answer
  The correct answer is B .
• Question 2864: If 2q3₅ = 77₈, find q Options:
  A) 2
  B) 1
  C) 4
  D) O
  Show Answer
  The correct answer is A .
• Question 2865: If M represents the median and D the mode of the measurements 5, 9, 3, 5, 8 then (M, D) is Options:
  A) (6, 5)
  B) (5, 8)
  C) (5, 7)
  D) (5, 5)
  E) (7, 5)
  Show Answer
  The correct answer is D .
• Question 2866:

  

  Find the length of the chord |AB| in the diagram shown above.

  Options:
  A) 4.2 cm
  B) 4.3 cm
  C) 3.2 cm
  D) 3.4 cm
  Show Answer
  The correct answer is D .
• Question 2867: If x + $\frac{1}{x}$ = 4, find x² + $\frac{1}{x^2}$ Options:
  A) 16
  B) 14
  C) 12
  D) 9
  Show Answer
  The correct answer is B .
• Question 2868: Find the area of the curved surface of a cone whose base radius is 6cm and whose height is 8cm (Take $\pi =\frac{22}{7}$). Options:
  A) 188.57cm${}^2$
  B) 1320cm${}^2$
  C) 188cm${}^2$
  D) 188.08cm${}^2$
  E) 100cm${}^2$
  Show Answer
  The correct answer is A .
• Question 2869: The seconds term of a geometric series is 4 while the fourth term is 16. Find the sum of the first five terms Options:
  A) 60
  B) 62
  C) 54
  D) 64
  Show Answer
  The correct answer is B .
• Question 2870:

  

  In the figure, PQ is parallel to SQ ; QS bisets < PSQ, < PQS is 65${}^{\circ }$ and < RPS is 20${}^{\circ }$. What is the size of < PRS?

  Options:
  A) 45${}^{\circ }$
  B) 35${}^{\circ }$
  C) 40${}^{\circ }$
  D) 30${}^{\circ }$
  E) 42${}^{\circ }$
  Show Answer
  The correct answer is D .