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On the set of all subsets of (S={1,2,3}), (A R B) holds when (A) and (B) have the same number of elements. Which is the equivalence class of ({1,2})?

Answer and explanation

Correct answer: ({{1,2},{1,3},{2,3}})

Step 1: The set ({1,2}) has (2) elements. Step 2: The subsets of (S) with (2) elements are ({1,2},{1,3},{2,3}). Step 3: To form the equivalence class, choose subsets with the same number of elements.

Related tags

SubsetsEquivalence ClassSame CardinalityEquivalence RelationRelations And FunctionsMathematicsClass 12 Mcq

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