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 1031: A binary operation ⊗ defined on the set of integers is such that m⊗n = m + n + mn for all integers m and n. Find the inverse of -5 under this operation, if the identity element is 0 Options:
  A) -⁵/₄
  B) -⁵/₆
  C) zero
  D) 5
  Show Answer
  The correct answer is A .
• Question 1032: What is the locus of a point P which moves on one side of a straight line XY, so that the angle XPY is always equal to 90^o? Options:
  A) the perpendicular bisector of XY
  B) a right-angled triangle
  C) a circle
  D) a semi circle
  Show Answer
  The correct answer is D .
• Question 1033:

  Evaluate ${\int }_{-4}^0(1-2x)dx$

  Options:
  A) -16
  B) -20
  C) 20
  D) 10
  Show Answer
  The correct answer is C .
• Question 1034: A man invests a sum of money at 4% per annum simple interest. After 3 years, the principal amounts to ₦7,000.00. Find the sum invested. Options:
  A) ₦7,840.00
  B) ₦6,250.00
  C) ₦6,160.00
  D) ₦5,833.33
  Show Answer
  The correct answer is B .
• Question 1035: Simplify 4 √[(390695T− 8)½)] Options:
  A) 1/T
  B) 2T
  C) 5/T
  D) T/5
  Show Answer
  The correct answer is C .
• Question 1036:

  Each of the interior angles of a regular polygon is 140°. Calculate the sum of all the interior angles of the polygon.

  Options:
  A) 1080°
  B) 1260°
  C) 2160°
  D) 1800°
  Show Answer
  The correct answer is B .
• Question 1037: If tan θ = ⁵/₄, find sin²θ - cos²θ. Options:
  A) ⁵/₄
  B) ⁴¹/₉
  C) ⁹/₄₁
  D) 1
  Show Answer
  The correct answer is C .
• Question 1038: In the diagram, find the size of the angle marked a^o Options:
  A) 60^o
  B) 80^o
  C) 120^o
  D) 160^o
  Show Answer
  The correct answer is B .
• Question 1039: An open rectangular box is made of wood 2cm thick. If the internal dimensions of the box are 50cm long, 36cm wide and 20cm deep, the box volume of wood in the box is Options:
  A) 11 520cm³
  B) 36 000cm³
  C) 38 200cm³
  D) 47 520cm³
  Show Answer
  The correct answer is A .
• Question 1040: A father is now three times as old as his son. Twelve years ago he was six times as old as his son. How old are the son and the father? Options:
  A) 20 and 45
  B) 100 and 150
  C) 45 and 65
  D) 35 and 75
  E) 20 and 60
  Show Answer
  The correct answer is E .