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 1501:

  The extension of a stretched string is directly proportional to its tension. If the extension produced by a tension of 8 Newtons is 2cm, find the extension produced by a tension of 12 Newtons.

  Options:
  A) 2
  B) 1
  C) 0
  D) 3
  Show Answer
  The correct answer is D .
• Question 1502: x varies directly as y and inversely as z. when x = 5, y = 2 and z = 1. What is the value of x when y = 5 and z = 2? Options:
  A) 2.5
  B) 5
  C) 6.25
  D) 6.52
  E) 7.5
  Show Answer
  The correct answer is C .
• Question 1503:

  What is the n-th term of the sequence 2, 6, 12, 20...?

  Options:
  A) 4n - 2
  B) 2(3^{n - 1})
  C) n² + n
  D) n² + 3n + 2
  Show Answer
  The correct answer is C .
• Question 1504: Find the equation of a line parallel to y = -4x + 2 passing through (2,3) Options:
  A) y + 4x + 11 = 0
  B) y - 4x - 11 = 0
  C) y + 4x - 11 = 0
  D) y - 4x + 11 = 0
  Show Answer
  The correct answer is C .
• Question 1505: If log₃x² = -8, what is x? Options:
  A) $\frac{1}{3}$
  B) $\frac{1}{9}$
  C) $\frac{1}{27}$
  D) $\frac{1}{81}$
  Show Answer
  The correct answer is D .
• Question 1506:

  

  In the figure, DE//BC: DB//FE: DE = 2cm, FC = 3cm, AE = 4cm. Determine the length of EC.

  Options:
  A) 4cm
  B) 6cm
  C) 3cm
  D) 2cm
  E) 1cm
  Show Answer
  The correct answer is B .
• Question 1507: The arithmetic mean of the ages of 30 pupils in a class is 15.3 years. One boy leaves the class and one girl is enrolled, and the new average age of 30 pupils in the class becomes 15.2 years. How much older is the boy than the girl? Options:
  A) 30 years
  B) 6 years
  C) 9 years
  D) 3 years
  E) 1 year
  Show Answer
  The correct answer is D .
• Question 1508: x varies directly as y and inversely as z. when x = 5, y = 2 and z = 1. What is the value of x when y = 5 and z = 2? Options:
  A) 2.5
  B) 5
  C) 6.25
  D) 6.52
  E) 7.5
  Show Answer
  The correct answer is C .
• Question 1509: If the volume of a cube is (8 x 103)cm${}^3$, what is the surface area the cube? Options:
  A) 2,400 cm${}^3$
  B) 1,600 cm${}^3$
  C) 120 cm${}^3$
  D) 24 cm${}^3$
  E) 16 cm${}^3$
  Show Answer
  The correct answer is A .
• Question 1510: Simplify $\frac{3^{-5n}}{9^{1-n}}\times {27}^{n+1}$ Options:
  A) 3²
  B) 3³
  C) 3⁵
  D) 3
  Show Answer
  The correct answer is D .