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 1871: If a{$\frac{x+1}{x-2}-\frac{x-1}{x+2}$} = 6x. Find a in its simplest form Options:
  A) x² - 1
  B) x² + 1
  C) x² + 4
  D) x² - 4
  E) 1
  Show Answer
  The correct answer is D .
• Question 1872: Find the coefficient of xy in the expansion of (x - 4y)(3x + 2y) Options:
  A) 14
  B) 12
  C) 10
  D) -10
  E) -12
  Show Answer
  The correct answer is D .
• Question 1873: Find y, if $\left(\begin{array}{cc}5& -6\\ 2& -7\end{array}\right)\left(\begin{array}{c}5\\ 2\end{array}\right)=\left(\begin{array}{c}7\\ -11\end{array}\right)$ Options:
  A) 8
  B) 5
  C) 3
  D) 2
  Show Answer
  The correct answer is C .
• Question 1874: If the interest on N150.00 for 2¹/₂ years is N4.50, find the interest on N250.00 for 6 months at the same rate Options:
  A) N1.50
  B) N7.50
  C) N15.00
  D) N18.00
  Show Answer
  The correct answer is A .
• Question 1875:

  

  FG is a given straight line and H is a fixed point. The construction marks shown in the diagram indicate the

  Options:
  A) perpendicular bisector of the line
  B) perpendicular bisector of th eline JK
  C) perpendicular bisector of the line HI
  D) perpendicular from H to the line FG
  Show Answer
  The correct answer is D .
• Question 1876: What is the mean deviation of x, 2x, x+1 and 3x. If their mean is 2? Options:
  A) 0.5
  B) 1.0
  C) 1.5
  D) 2.0
  Show Answer
  The correct answer is A .
• Question 1877:

  Calculate 243${}_{six}$ – 243${}_{five}$ expressing your answer in base 10.

  Options:
  A) 1
  B) 26
  C) 46
  D) 0
  Show Answer
  The correct answer is C .
• Question 1878: P sold his bicycle to Q at a profit of 10%. How much did the bicycle cost P? Options:
  A) ₦200
  B) ₦196
  C) ₦180
  D) ₦205
  E) ₦150
  Show Answer
  The correct answer is A .
• Question 1879: A cone is formed by bending a sector of a circle having an angle of 210^o. Find the radius of the base of the cone if the diameter of the circle is 12cm. Options:
  A) 12cm
  B) 7.00cm
  C) 1.75cm
  D) 21cm
  E) 3.50cm
  Show Answer
  The correct answer is E .
• Question 1880: x varies directly as y and inversely as z. when x = 5, y = 2 and z = 1. What is the value of x when y = 5 and z = 2? Options:
  A) 2.5
  B) 5
  C) 6.25
  D) 6.52
  E) 7.5
  Show Answer
  The correct answer is C .