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 1641: A worker's present salary is ₦24,000 per annum. His annual increment is 10% of his basic salary at the beginning of the third year? Options:
  A) ₦28,800
  B) ₦29,040
  C) ₦31,200
  D) ₦31,944
  Show Answer
  The correct answer is B .
• Question 1642:
  

  Calculate the area of the composite figure above.

  Options:
  A) 6048 m${}^2$
  B) 3969 m${}^2$
  C) 4628 m${}^2$
  D) 5834 m${}^2$
  Show Answer
  The correct answer is B .
• Question 1643: The diameter of a metal rod is measured as 23.40cm to four significant figures. What is the maximum error in the measurement?
  Options:
  A) 0.05cm
  B) 0.5cm
  C) 0.045cm
  D) 0.005cm
  E) 0.004cm
  Show Answer
  The correct answer is D .
• Question 1644: Which of the following binary operations is cumulative in the set of integers? Options:
  A) a $\ast$ b = a + 2b
  B) a $\ast$ b = a + b - ab
  C) a $\ast$ b = a² + b
  D) a $\ast$ b = $\frac{a(b+1)}{2}$
  Show Answer
  The correct answer is C .
• Question 1645: If y = x Sin x, find $\frac{dy}{dx}$ when x = $\frac{\pi }{2}$ Options:
  A) $\frac{-\pi }{2}$
  B) -1
  C) 1
  D) $\frac{\pi }{2}$
  Show Answer
  The correct answer is C .
• Question 1646:

  A train moves from P to Q at an average speed of 90km/h and immediately returns from Q to P through the same route at an average speed of 45km/h. Find the average speed for the entire journey

  Options:
  A) 55.00km/h
  B) 60.00km/h
  C) 67.50km/h
  D) 75.00km/h
  Show Answer
  The correct answer is B .
• Question 1647: Convert 72₆ to a number in base three Options:
  A) 2211
  B) 2121
  C) 1212
  D) 1122
  Show Answer
  The correct answer is D .
• Question 1648:

  $\begin{array}{cccccc}\text{Class Interval}& 1-5& 6-10& 11-15& 16-20& 21-25\\ Frequency& 6& 15& 20& 7& 2\end{array}$

  Estimate the median of the frequency distribution above

  Options:
  A) 10$\frac{1}{2}$
  B) 11$\frac{1}{2}$
  C) 12
  D) 13
  Show Answer
  The correct answer is C .
• Question 1649: The set of value of x and y which satisfies the equations x² - y - 1 = 0 and y - 2x + 2 = 0 is Options:
  A) 1, 0
  B) 1, 1
  C) 2, 2
  D) 0, 2
  E) 1, 2
  Show Answer
  The correct answer is A .
• Question 1650: The area of a square is 444 sqcm. Find the length of the diagonal. Options:
  A) 12$\sqrt{2}$ cm
  B) 11$\sqrt{3}$cm
  C) 13 cm
  D) 12 cm
  Show Answer
  The correct answer is A .