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Mathematics · 2026 · 1 mark
CBSE 2026 · Region 5 · Set 1 · Q20
Assertion (A): H.C.F. (36 m^2, 18 m )=18 m, where m is a prime number. Reason (R): H.C.F. of two numbers is always less than or equal to the smaller…
Assertion (A) : H.C.F. $\displaystyle \left(36 \mathrm{~m}^{2}, 18 \mathrm{~m}\right)=18 \mathrm{~m}$, where m is a prime number.
Reason (R) : H.C.F. of two numbers is always less than or equal to the smaller number.
Official answer
(B)
Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
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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.