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 1901: 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 .
• Question 1902: A man invested ₦5,000 for 9 months at 4%. What is the simple interest? Options:
  A) ₦150
  B) ₦220
  C) ₦130
  D) ₦250
  Show Answer
  The correct answer is A .
• Question 1903: What is the value of x satisfying the equation $\frac{4^{2x}}{4^{3x}}$ = 2? Options:
  A) -2
  B) -$\frac{1}{2}$
  C) $\frac{1}{2}$
  D) 2
  Show Answer
  The correct answer is B .
• Question 1904:

  The area of an ellipse is 132cm². The length of its major axis is 14cm. Find the length of it minor axis.

  Options:
  A) 10.5cm
  B) 5cm
  C) 10cm
  D) 12cm
  Show Answer
  The correct answer is D .
• Question 1905: A cylinder of height h and radius r is open at one end. Its surface area is Options:
  A) 2$\pi$rh
  B) $\pi$r²h
  C) 2$\pi$rh + $\pi$r²
  D) 2$\pi$rh + 2$\pi$r²
  Show Answer
  The correct answer is C .
• Question 1906:

  $\text{P}={\left[\frac{\mathrm{Q}(\mathrm{R}-\mathrm{T})}{15}\right]}^{\frac{1}{3}}$

  Make T the subject of the relation.

  Options:
  A) $\text{T}=\frac{\text{R}+\text{P3}}{15\text{Q}}$
  B) $\text{T}=\frac{\text{R}-15{\text{P}}^3}{\text{Q}}$
  C) $\text{T}=\text{R}-\frac{15{\text{P}}^3}{\text{Q}}$
  D) $\text{T}=\frac{15\text{R}+\text{Q}}{{\text{P}}^3}$
  Show Answer
  The correct answer is C .
• Question 1907:

  

  In the figure, $△$PQT is isosceles. PQ = QT, SRQ = 35${}^{\circ }$, TPQ = 20${}^{\circ }$ and PQR is a straight line.Calculate TSR

  Options:
  A) 20${}^{\circ }$
  B) 55${}^{\circ }$
  C) 75${}^{\circ }$
  D) 140${}^{\circ }$
  Show Answer
  The correct answer is C .
• Question 1908: If y = 4x³ - 2x² + x, find $\frac{\delta y}{\delta x}$ Options:
  A) 8x² - 2x + 1
  B) 8x² - 4x + 1
  C) 12x² - 2x + 1
  D) 12x² - 4x + 1
  Show Answer
  The correct answer is D .
• Question 1909:

  

  The triangle PQR above is

  Options:
  A) an obtuse-angled triangle
  B) a scalene triangle
  C) an isosceles triangle
  D) an equilateral triangle
  Show Answer
  The correct answer is C .
• Question 1910:

  The population of a village decreased from 1,230 to 1,040 due to breakout of an epidemic. What is the percentage decrease in the population?

  Options:
  A) 15.44%
  B) 15.43%
  C) 15.42%
  D) 15.45%
  Show Answer
  The correct answer is D .