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 561:

  

  The shaded portion in the Venn diagram is

  Options:
  A) x $\cap$ z
  B) x${}^{\circ }$ $\cap$ y $\cap$ z
  C) x $\cap$ y${}^{\circ }$ $\cap$ z
  D) x $\cap$ y $\cap$ z${}^{\circ }$
  Show Answer
  The correct answer is A .
• Question 562:

  

  The pie chart above illustrate the amount of private time a student spends in a week studying various subjects. Find the value of k

  Options:
  A) 90${}^{\circ }$
  B) 60${}^{\circ }$
  C) 30${}^{\circ }$
  D) 40${}^{\circ }$
  Show Answer
  The correct answer is C .
• Question 563:

  If w varies inversely as $\frac{uv}{u+v}$ and w =8 when

  u = 2 and v= 6, find a relationship between u, v, w.

  Options:
  A) uvw = 16(u + v)
  B) 16uv = 3w(u + v)
  C) uvw = 12(u + v)
  D) 12uvw = u + v
  Show Answer
  The correct answer is C .
• Question 564:

  Divide the L.C.M of 48, 64 and 80 by their H.C.F.

  Options:
  A) 20
  B) 30
  C) 48
  D) 60
  Show Answer
  The correct answer is D .
• Question 565: 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 566: 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 567: What must be added to 4x² - 4 to make it a perfect square? Options:
  A) $\frac{-1}{x^2}$
  B) $\frac{1}{x^2}$
  C) 1
  D) -1
  Show Answer
  The correct answer is B .
• Question 568:

  A man invested a sum of ₦280.00 partly at 5% and partly at 4%. if the total interest is ₦12.90 per annum, find the amount invested at 5%.

  Options:
  A) 14.00
  B) 120.00
  C) 140.00
  D) 160.00
  Show Answer
  The correct answer is D .
• Question 569: Solve the following simultaneous equation for x. x² + y - 5 = 0, y - 7x + 3 = 0 Options:
  A) -2, 4
  B) 2, 4
  C) -1,8
  D) 1, -8
  Show Answer
  The correct answer is D .
• Question 570: A binary operation $\ast$ is defined on a set of real numbers by x $\ast$ y = x^y for all real values of x and y. If x $\ast$ 2 = x. Find the possible values of x Options:
  A) 0, 1
  B) 1, 2
  C) 2, 2
  D) 0, 2
  Show Answer
  The correct answer is A .