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Mathematics · 2023 · 1 mark
CBSE 2023 · Region 1 · Set 1 · Q20
Assertion (A) : The perimeter of $\displaystyle \triangle \mathrm{ABC}$ is a rational number.
Reason (R) : The sum of the squares of two rational numbers is always rational.

Official answer
From CBSE’s own marking scheme for this paper.
(D)
Assertion (A) is false but Reason (R) is true.
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CBSE Class 10 Mathematics past-paper question from the 2023board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.