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On (A={1,2,3,4}), (aRb) when (a+b) is even. Choose the correct statement.

Answer and explanation

Correct answer: (R) is an equivalence relation

Step 1: (a+a=2a) is always even, so the relation is reflexive. Step 2: If (a+b) is even, then (b+a) is even, and same parity gives transitivity. Step 3: An even sum means both numbers have the same parity.

Related tags

RelationsFunctionsEquivalence RelationEven SumParityRelations And FunctionsMathematicsClass 12 Mcq

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