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 21:

  P(-6, 1) and Q(6, 6) are the two ends of the diameter of a given circle. Calculate the radius.

  Options:
  A) 6.5 units
  B) 13.0 units
  C) 3.5 units
  D) 7.0 units
  Show Answer
  The correct answer is A .
• Question 22:

  

  In the diagram above are two concentric circles of radii r and R respectively with center O. If r = ²/₃R, express the area of the shaded portion in terms of π and R

  Options:
  A) ²¹/₂₅πR²
  B) ⁹/₂₅πR²
  C) ²¹/₂₃πR²
  D) ⁵/₉πR²
  Show Answer
  The correct answer is D .
• Question 23: Simplify log₁₀1.5 + 3 log₁₀2 − log₁₀0.3 Options:
  A) log₁₀4
  B) log₁₀40
  C) log₁₀-40
  D) log₁₀4^-
  Show Answer
  The correct answer is B .
• Question 24:

  Inpreparing rice cutlets, a cook used 75g of rice, 40g of margarine, 105g of meat and 20g of bread crumbs. Find the angle of the sector which represent meat in a pie chart?

  Options:
  A) 30${}^o$
  B) 60${}^o$
  C) 112.5${}^o$
  D) 157.5${}^o$
  Show Answer
  The correct answer is D .
• Question 25: The 4th term of a G.P is 3 and its first term is 81. What is its common ratio? Options:
  A) 3
  B) $\frac{2}{3}$
  C) $\frac{1}{3}$
  D) -$\frac{1}{3}$
  E) -3
  Show Answer
  The correct answer is C .
• Question 26:

  If y varies inversely as x and x = 3 when y =4. Find the value of x when y = 12

  Options:
  A) 4
  B) 1
  C) 2
  D) 3
  Show Answer
  The correct answer is B .
• Question 27: Find the mean deviation of 20, 25, 21, 27, 28, 29, to the nearest whole number Options:
  A) 2
  B) 3
  C) 4
  D) 5
  E) 6
  Show Answer
  The correct answer is B .
• Question 28: If 5x - 3 = 4x - 7, what is the value 6x? Options:
  A) 24
  B) 6
  C) 4
  D) -4
  E) -24
  Show Answer
  The correct answer is E .
• Question 29: If ^dy/_dx = x + cos x, find y Options:
  A) x² - sin x + c
  B) x² + sin x + c
  C) ^x2/₂ - sin x + c
  D) ^x2/₂ + sin x + c
  Show Answer
  The correct answer is D .
• Question 30: In a class of 120 students, 18 of them scored an A grade in mathematics. If the section representing the A grade students on a pie chart has angle Z^o at the centre of the circle, what is Z? Options:
  A) 15
  B) 27
  C) 50
  D) 52
  E) 54
  Show Answer
  The correct answer is E .