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Mathematics · 2023 · 1 mark
CBSE 2023 · Region 1 · Set 1 · Q20
Assertion (A): The perimeter of ABC is a rational number. Reason (R): The sum of the squares of two rational numbers is always rational.
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
(D)
Assertion (A) is false but Reason (R) is true.
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CBSE Class 10 Mathematics past-paper question from the 2023 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.