CBSE 2024 · Region 4 · Set 1 · Q19 · 1 mark
Assertion (A) : The relation $\displaystyle \mathrm{R}=\{(x, \mathrm{y}):(x+\mathrm{y})$ is a prime number and $\displaystyle x, \mathrm{y} \in \mathrm{N}\}$ is not a reflexive relation.
Reason (R): The number ' $\displaystyle 2 n$ ' is composite for all natural numbers $\displaystyle n$.
Official answer
From CBSE’s own marking scheme for this paper.
(C)
Assertion (A) is true, but Reason (R) is false.
Relations and FunctionsTypes of RelationsAnalyseassertion_reasonmedium
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CBSE Class 12 Mathematics past-paper question from the 2024board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.