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 791: A sector of angle 120° is cut out from a circle of radius 13.5cm. what area of the circle is remaining ? (π = $\frac{22}{7}$) Options:
  A) 14.1cm²
  B) 95.5cm²
  C) 190.9cm²
  D) 381.9cm²
  E) 763.7cm²
  Show Answer
  The correct answer is D .
• Question 792: The area of a square is 144 sqcm. Find the length of the diagonal. Options:
  A) 13 cm
  B) 12√2 cm
  C) 12 cm
  D) 11√3 cm
  Show Answer
  The correct answer is B .
• Question 793: Factorize x² + 2a + ax + 2x Options:
  A) (x + 2a)(x + 1)
  B) (x + 2a)(x - 1)
  C) (x² - 1)(x - a)
  D) (x + 2)(x + a)
  Show Answer
  The correct answer is D .
• Question 794: Some white balls put in a basket containing twelve red balls and sixteen black balls. If the probability of picking a white balls from the baskets is 3/7, how many white balls were introduced? Options:
  A) 12
  B) 21
  C) 28
  D) 32
  Show Answer
  The correct answer is B .
• Question 795: Given that 3x - 5y - 3 = 0, 2y - 6x + 5 = 0 the value of (x, y) is Options:
  A) ($\frac{-1}{8},\frac{19}{24}$)
  B) 8, $\frac{24}{19}$
  C) -8, $\frac{24}{19}$
  D) ($\frac{19}{24},\frac{-1}{8}$)
  Show Answer
  The correct answer is D .
• Question 796: A number is selected at random between 10 and 20, both numbers inclusive. Find the probability that the number is an even number Options:
  A) $\frac{5}{11}$
  B) $\frac{1}{2}$
  C) $\frac{6}{11}$
  D) $\frac{7}{10}$
  Show Answer
  The correct answer is C .
• Question 797: Calculate (0.05 × 0.025) ÷ (4.25 × 3.35) and express your answer in standard form Options:
  A) 8.7796 × 10⁵
  B) 8.7796 × 10⁴
  C) 8.7796 × 10³
  D) 8.7796 × 10^-3
  E) 8.7796 × 10^-5
  Show Answer
  The correct answer is E .
• Question 798: Given that the first and forth terms of G.P are 6 and 162 respectively, find the sum of the first three terms of the progression Options:
  A) 27
  B) 8
  C) 78
  D) 48
  Show Answer
  The correct answer is C .
• Question 799: If the interest on N150.00 for 2¹/₂ years is N4.50, find the interest on N250.00 for 6 months at the same rate Options:
  A) N1.50
  B) N7.50
  C) N15.00
  D) N18.00
  Show Answer
  The correct answer is A .
• Question 800:

  A man runs a distance of 9km at a constant speed for the first 4 km and then 2 km\h faster for the rest of the distance. The whole run takes him one hour. His average speed for the first 4 km is

  Options:
  A) 6 km/h
  B) 8 km/h
  C) 9 km\h
  D) 11 km\h
  E) 13 km\h
  Show Answer
  The correct answer is B .