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Friday, 14 August 2026
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Mathematics Past Questions and Answers

Topic: Variation

Jamb Mathematics Questions - Variation

Question 16:
JAMB 2013
P varies jointly as m and u, and varies inversely as q. Given that p = 4, m = 3 and u = 2 and q = 1, find the value of p when m = 6, u = 4 and q =\(\frac{8}{5}\)
SchoolNGR Classroom
  • A 12\(\frac{8}{5}\)
  • B 15
  • C 10
  • D 28\(\frac{8}{5}\)
View Answer & Explanation
Question 17:
JAMB 2013
Find the inverse \(\begin{pmatrix} 5 & 3 \\ 6 & 4 \end{pmatrix}\)
SchoolNGR Classroom
  • A \(\begin{vmatrix} 2 & -\frac{3}{2} \\ -3 & -\frac{5}{2} \end{vmatrix}\)
  • B \(\begin{vmatrix} 2 & -\frac{3}{2} \\ -3 & \frac{5}{2} \end{vmatrix}\)
  • C \(\begin{vmatrix} 2 & \frac{3}{2} \\ -3 & \frac{5}{2} \end{vmatrix}\)
  • D \(\begin{vmatrix} 2 & \frac{3}{2} \\ -3 & \frac{5}{2} \end{vmatrix}\)
View Answer & Explanation
Question 18:
JAMB 2023
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?
SchoolNGR Classroom
  • A 15.44%
  • B 15.43%
  • C 15.42%
  • D 15.45%
View Answer & Explanation

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