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Saturday, 10 October 2026
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Mathematics Past Questions and Answers

Jamb 1987 Mathematics Questions

Question 1:
Convert 241 in base 5 to base 8,
  • A 71<sub style='font-size: smaller;'>8</sub>
  • B 107<sub style='font-size: smaller;'>8</sub>
  • C 176<sub style='font-size: smaller;'>8</sub>
  • D 241<sub style='font-size: smaller;'>8</sub>
View Answer & Explanation
Question 2:
Find the least length of a rod which can be cut into exactly equal strips, each of either 40cm or 48cm in length
  • A 120cm
  • B 240cm
  • C 360cm
  • D 480cm
View Answer & Explanation
Question 3:
A rectangular lawn has an area of 1815 square yards. if its length is 50 meters, find its width in meters given that 1 metre equals 1.1 yards
  • A 39.93
  • B 35.00
  • C 33.00
  • D 30.00
View Answer & Explanation
Question 4:
Reduce each number to two significant figures and then evaluate \(\frac{0.021741 \times 1.2047}{0.023789}\)
  • A 0.8
  • B 0.9
  • C 1.1
  • D 1.2
View Answer & Explanation
Question 5:
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
  • A 55.00km/h
  • B 60.00km/h
  • C 67.50km\h
  • D 75.00km\h
View Answer & Explanation