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 431: 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 432: Factorize 2t² + t - 15 Options:
  A) (2t - 3)(t + 5)
  B) (t + 3)(2t - 5)
  C) (t + 3)(t - 5)
  D) (2t + 3)(t - 5)
  Show Answer
  The correct answer is B .
• Question 433:

  Find the compound interest (CI) on ₦15,700 for 2 years at 8% per annum compounded annually.

  Options:
  A) ₦6,212.48
  B) ₦2,834.48
  C) ₦18,312.48
  D) ₦2,612.48
  Show Answer
  The correct answer is D .
• Question 434: A sector of angle 120° is cut out from a circle of radius 13.5cm. what area of the circle is remaining ? (π = $\frac{22}{7}$) Options:
  A) 14.1cm²
  B) 95.5cm²
  C) 190.9cm²
  D) 381.9cm²
  E) 763.7cm²
  Show Answer
  The correct answer is D .
• Question 435: Find the standard deviation of the numbers 6, 9, 10, 8 and 7 Options:
  A) 1.4
  B) 2
  C) 2.4
  D) 5
  E) 8
  Show Answer
  The correct answer is A .
• Question 436:

  

  The area under the speed time graph given the total distance covered by car. What is the average velocity to two places of decimals?

  Options:
  A) 17.72 meter/sec.
  B) 21.67 meters/sec
  C) 2.5 meter/sec.
  D) 20.45 meters/sec.
  E) 13.33 meter/sec.
  Show Answer
  The correct answer is D .
• Question 437: The locus of a point equidistant from two points p(6,2) and R(4,2) is a perpendicular bisector of PR passing through Options:
  A) (2,5)
  B) (5,2)
  C) (1,0)
  D) (0,1)
  Show Answer
  The correct answer is B .
• Question 438: If y = 243(4x + 5)^-2, find $\frac{dy}{dx}$ when x = 1 Options:
  A) $\frac{-8}{3}$
  B) $\frac{3}{8}$
  C) $\frac{9}{8}$
  D) -$\frac{8}{9}$
  Show Answer
  The correct answer is A .
• Question 439: A man 1.7m tall observes a bird on top of a tree at an angle of 30⁰. if the distance between the man's head and the bird is 25m, what is the height of the tree? Options:
  A) 26.7m
  B) 14.2m
  C) $1.7+(25\frac{\sqrt{3}}{3}m$
  D) $1.7+(25\frac{\sqrt{2}}{2}m$
  Show Answer
  The correct answer is C .
• Question 440:

  

  In the figure below, /MX/ = 8cm, /XN/ = 12cm, /NZ/ = 4cm and ∠ XMN = ∠ XZY. Calculate /YM/

  Options:
  A) 32 cm
  B) 24 cm
  C) 16 cm
  D) 12 cm
  Show Answer
  The correct answer is C .