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 531: If cos 60^o = 1/2, which of the following angle has cosine of -1/2? Options:
  A) 30^o
  B) 120^o
  C) 150^o
  D) 210^o
  E) 300^o
  Show Answer
  The correct answer is B .
• Question 532:

  

  In the diagram, XZ is the diameter of the circle XYZW, with centre O and radius $\frac{15}{2}$cm. If XY = 12cm, find the area of the triangle XYZ

  Options:
  A) 45cm³
  B) 27cm³
  C) 75cm³
  D) 54cm³
  Show Answer
  The correct answer is D .
• Question 533: If 6log_x2 - 3log_x3 = 3log₅0.2, find x. Options:
  A) 8/3
  B) 4/3
  C) 3/4
  D) 3/8
  Show Answer
  The correct answer is C .
• Question 534: Mohammed is 8 years older than Joy now. In five years’ time he will be twice as old as Joy. How old is Joy now? Options:
  A) 1$\frac{1}{2}$years
  B) 3years
  C) 4$\frac{1}{2}$years
  D) 6 years
  E) 8 years
  Show Answer
  The correct answer is B .
• Question 535: 7 pupils of average age 12 years leave a class of 25 pupils of average age 14 years. If 6 new pupils of average age 11years join the class, what is the average age of the pupils now in the class? Options:
  A) 13years
  B) 12 years 7$\frac{1}{2}$ months
  C) 13 years 5 months
  D) 13 years 10 months
  E) 11 years
  Show Answer
  The correct answer is D .
• Question 536: When the expression pm² + qm + 1 is divided by (m - 1), it has a remainder is 4, Find p and q respectively Options:
  A) 2, -1
  B) -1, 2
  C) 3, -2
  D) -2, 3
  Show Answer
  The correct answer is B .
• Question 537: An operation * is defined on the set of real numbers by a*b = a + b + 1. If the identity elements is -1, find the inverse of the element 2 under *. Options:
  A) 4
  B) zero
  C) -2
  D) -4
  Show Answer
  The correct answer is D .
• Question 538:

  

  In the diagram, find PQ if the area of triangle PQR is 35cm²

  Options:
  A) 7cm
  B) 10cm
  C) 14cm
  D) 17cm
  Show Answer
  The correct answer is A .
• Question 539:

  $\frac{d}{dx}$ cos(3x² - 2x) is equal to

  Options:
  A) -sin(6x - 2)
  B) -sin(3x² - 2x)dx
  C) (6x - 2) sin(3x² - 2x)
  D) -(6x - 2)sin(3x² - 2x)
  Show Answer
  The correct answer is D .
• Question 540: If m = 3, p = -3, q = 7 and r = 5/2, evaluate m(p+q+r) Options:
  A) 19.50
  B) 19.15
  C) 18.95
  D) 18.05
  Show Answer
  The correct answer is A .