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Saturday, 13 June 2026
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Mathematics Past Questions and Answers

Topic: Surds

Jamb Mathematics Questions - Surds

Question 6:
Rationalize the expression \(\frac{1}{\sqrt{2} + \sqrt{5}}\)
  • A \(\frac{1}{3}\)(\(\sqrt{5} - \sqrt{2}\)
  • B \(\frac{\sqrt{2}}{3}\) + \(\frac{\sqrt{5}}{5}\)
  • C \(\sqrt{2} - \sqrt{5}\)
  • D 5(\(\sqrt{2} - \sqrt{5}\)
  • E \(\frac{1}{3}\)(\(\sqrt{2} - \sqrt{5}\)
View Answer & Explanation
Question 7:
PQRS is a desk of dimensions 2m x 0.8 which is inclined at 30o to the horizontal. Find the inclination of the diagonal PR to the horizontal
  • A 30<sup style='font-size: smaller;'>o</sup> 35'
  • B 30<sup style='font-size: smaller;'>o</sup> 32'
  • C 15<sup style='font-size: smaller;'>o</sup> 36'
  • D 10<sup style='font-size: smaller;'>o</sup>
  • E 10<sup style='font-size: smaller;'>o</sup> 42'
View Answer & Explanation
Question 8:
Rationalize \(\frac{5\sqrt{7} - 7\sqrt{5}}{\sqrt{7} - \sqrt{5}}\)
  • A -2 \sqrt{35}\)
  • B 4\sqrt{7}\) - 6\(\sqrt{5}\)
  • C -\(\sqrt{35}\)
  • D 4\sqrt{7}\) - 8\(\sqrt{5}\)
  • E \(\sqrt{35}\)
View Answer & Explanation
Question 9:
Rationalize \(\frac{2\sqrt{3} + 3 \sqrt{2}}{3\sqrt{2} - 2 \sqrt{3}}\)
  • A 5 - 2\(\sqrt{6}\)
  • B 5 + 2\(\sqrt{6}\)
  • C 5\(\sqrt{6}\)
  • D 5
View Answer & Explanation
Question 10:
Rationalize \(\frac{2\sqrt{3} + \sqrt{5}}{\sqrt{5} - \sqrt{3}}\)
  • A (3 √ 15 +11) / 2
  • B 3 √ 15 -11
  • C (3 √ 15 -11) / 2
  • D 3 √ 15 +11
View Answer & Explanation