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If (S={1,2,3}) and (A=\mathcal{P}(S)). On (A), (R={(X,Y):X\triangle Y=\varnothing}). Choose the correct statement about (R).

Answer and explanation

Correct answer: (R) is reflexive

Step 1: On the diagonal, (X\triangle X=\varnothing). Step 2: The symmetric difference of a set with itself is the empty set. Step 3: For symmetric-difference relations, checking equal sets quickly proves reflexivity.

Related tags

Reflexive RelationSymmetric DifferencePower SetRelations And FunctionsMathematicsClass 12 Mcq

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