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 121: In the equation below, Solve for x if all the numbers are in base 2: $\frac{11}{x}$ = $\frac{1000}{x+101}$ Options:
  A) 101
  B) 11
  C) 110
  D) 111
  E) 10
  Show Answer
  The correct answer is B .
• Question 122: Divide x³ - 2x² - 5x + 6 by (x - 1) Options:
  A) x² - x - 6
  B) x² - 5x + 6
  C) x² - 7x + 6
  D) x² - 5x - 6
  Show Answer
  The correct answer is A .
• Question 123: The variance of the scores 1, 2, 3, 4, 5 is Options:
  A) 1, 2
  B) 1, 4
  C) 2.0
  D) 3.0
  Show Answer
  The correct answer is C .
• Question 124: Each of the interior angles of a regular polygon is 140^o. Calculate the sum of all the interior angles of the polygon Options:
  A) 1080^o
  B) 1260^o
  C) 1800^o
  D) 2160^o
  Show Answer
  The correct answer is B .
• Question 125: If x is jointly proportional to the cube of y and the fourth power of z. In what ratio is x increased or decreased when y is halved and z is doubled? Options:
  A) 4:1 increase
  B) 2:1 increase
  C) 1:1 no change
  D) 1:4 decrease
  E) 3:4 decrease
  Show Answer
  The correct answer is B .
• Question 126: The nth term of a sequence is given as 4 x 3(3 - n). Calculate the third term. Options:
  A) 12
  B) 32
  C) 4
  D) 3
  E) 1
  Show Answer
  The correct answer is C .
• Question 127: For what values of x is the curve y = $\frac{x^2+3}{x+4}$ decreasing?
  Options:
  A) -3 < x $\le$ 0
  B) -3 $\ge$ x < 0
  C) 0 < x < 3
  D) 0 $\le$ x $\le$ 3
  Show Answer
  The correct answer is D .
• Question 128: Solve the equation (x - 2) (x - 3) = 12 Options:
  A) 2, 3
  B) 3, 6
  C) -1, 6
  D) 1, -6
  Show Answer
  The correct answer is C .
• Question 129:
  

  Find the volume of the cylinder above
  [Take $\pi {=}^{22}{/}_7$]

  Options:
  A) 9,856 cm${}^3$
  B) 14,784 cm${}^3$
  C) 4,928 cm${}^3$
  D) 19,712 cm${}^3$
  Show Answer
  The correct answer is B .
• Question 130:

  A car travels from calabar to Enugu, a distance of P km with an average speed of U km per hour and continues to benin, a distance of Q km, with an average speed of Wkm per hour. Find its average speed from Calabar to Benin

  Options:
  A) $\frac{(p+q)}{pw+qu}$
  B) $\frac{uw(p+q)}{pw+qu}$
  C) $\frac{uw(p+q)}{pw}$
  D) $\frac{uw}{pw+qu}$
  Show Answer
  The correct answer is B .