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On the family of all subsets of (S={1,2,3}), (R) is defined by (XRY) when (X\subseteq Y). Is (R) reflexive?

Answer and explanation

Correct answer: Yes, because (X\subseteq X) for every (X)

Step 1: Here the elements are subsets, not ordinary numbers. Step 2: Every subset (X) is a subset of itself, so (XRX) is true. Step 3: In subset relations, read the base family carefully.

Related tags

Subset RelationPower SetReflexive RelationMediumRelations And FunctionsMathematicsClass 12 Mcq

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