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Mathematics · 2026 · 1 mark
CBSE 2026 · Region 4 · Set 1 · Q20
Assertion (A): (√ 3 +√ 5 ) is an irrational number. Reason (R): Sum of the any two irrational numbers is always irrational.
Assertion (A) : $\displaystyle (\sqrt{3}+\sqrt{5})$ is an irrational number.
Reason (R) : Sum of the any two irrational numbers is always irrational.
Official answer
(C)
Assertion (A) is true, but Reason (R) is false.
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CBSE Class 10 Mathematics past-paper question from the 2026 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.