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How many relations on (A={1,2,3,4}) are both symmetric and antisymmetric?

Answer and explanation

Correct answer: (2^4)

Step 1: If symmetry and antisymmetry hold together, no off-diagonal pair between distinct elements can be included. Step 2: Only diagonal pairs are independently optional. Step 3: With (4) diagonal pairs, the total number is (2^4).

Related tags

RelationsSymmetric-AntisymmetricCountingExpertIntroduction To RelationsRelations And FunctionsMathematicsClass 12 Mcq

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