Let A=\{1,2,3,4,5\} and let B=\{1,2,3,4\}. If the relation R: A \to B is given by (a, b) \in R if and only if a+ b is even, then n(R) is equal to

KEAM 2022 Math Solved Paper

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Let A={1,2,3,4,5} and let B={1,2,3,4}. If the relation R:A→B is given by (a,b)∈R if and only if a+ b is even, then n(R) is equal to

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