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Mathematics · 2024 · 1 mark
CBSE 2024 · Region 4 · Set 1 · Q19
Assertion (A): The relation R ={(x, y ):(x+ y ) is a prime number and x, y ∈ N } is not a reflexive relation. Reason (R): The number ' 2 n ' is…
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
(C)
Assertion (A) is true, but Reason (R) is false.
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