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 1721:

  

  In the diagram, EFGH is a circle centre O. FH is a diameter and GE is a chord which meets FH at right angle at the point N. If NH = 8cm and EG = 24cm, calculate FH

  Options:
  A) 32cm
  B) 26cm
  C) 20cm
  D) 16cm
  Show Answer
  The correct answer is B .
• Question 1722: The mean of 2 - 4, 4 + t, 3 - 2t and t - 1 is Options:
  A) t
  B) -t
  C) 2
  D) -2
  Show Answer
  The correct answer is C .
• Question 1723:

  List all integers satisfying the inequality in -2 < 2x-6 < 4

  Options:
  A) 2,3,4 and 5
  B) 2,3
  C) 2,5
  D) 3,4
  Show Answer
  The correct answer is D .
• Question 1724: T varies inversely as the cube of R. When R = 3, T = $\frac{2}{81}$, find T when R = 2 Options:
  A) $\frac{1}{18}$
  B) $\frac{1}{12}$
  C) $\frac{1}{24}$
  D) $\frac{1}{6}$
  Show Answer
  The correct answer is B .
• Question 1725: Find the positive number n such that thrice its square is equal to 12 times the number. Options:
  A) 1
  B) 2
  C) 3
  D) 4
  Show Answer
  The correct answer is D .
• Question 1726: The length L of a simple pendulum varies directly as the square of its period T. If a pendulum with period 4 sec. is 64 cm long, find the length of pendulum whose period is 9 sec Options:
  A) 96 cm
  B) 324 cm
  C) 36 cm
  D) 144 cm
  Show Answer
  The correct answer is B .
• Question 1727:
  

  Calculate, correct to three significant figures, the length of the arc AB in the diagram above.
  [Take $\pi {=}^{22}{/}_7$]

  Options:
  A) 32.4 cm
  B) 30.6 cm
  C) 28.8 cm
  D) 30.5 cm
  Show Answer
  The correct answer is B .
• Question 1728: Find the mean deviation of 20, 25, 21, 27, 28, 29, to the nearest whole number Options:
  A) 2
  B) 3
  C) 4
  D) 5
  E) 6
  Show Answer
  The correct answer is B .
• Question 1729: Multiply (x² - 3x + 1) by (x - a) Options:
  A) x³ - (3 + a) x² + (1 + 3a)x - a
  B) x³ - (3 - a)x² + 3ax - a
  C) x³ - (3 - a)x² - (1 = 3a) - a
  D) x³ + (3 - a)x² + (1 + 3a) - a
  Show Answer
  The correct answer is A .
• Question 1730:

  Find the number of ways that the letters of the word EXCELLENCE be arranged

  Options:
  A) $\frac{10!}{2!2!2!}$
  B) $\frac{10!}{4!2!}$
  C) $\frac{10!}{4!2!2!}$
  D) $\frac{10!}{2!2!}$
  Show Answer
  The correct answer is C .