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If (A={1,2,3}), how many reflexive relations can be formed on (A)?

Answer and explanation

Correct answer: (2^6=64)

Step 1: (A) has 3 elements, so (A \times A) has 9 pairs. Step 2: A reflexive relation must contain 3 self-pairs, while the remaining (9-3=6) pairs are optional. Step 3: Hence the number of reflexive relations is (2^6=64).

Related tags

Reflexive RelationCounting RelationsClass 12McqRelations And FunctionsMathematicsClass 12 Mcq

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