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On (A={a,b,c}), a symmetric relation contains ((a,b)) and ((c,a)). Which pairs must be present at minimum?

Answer and explanation

Correct answer: ((b,a)) and ((a,c))

Step 1: In a symmetric relation, every included ordered pair needs its reverse. Step 2: ((a,b)) requires ((b,a)), and ((c,a)) requires ((a,c)). Step 3: Diagonal pairs are required for reflexivity, not for symmetry alone.

Related tags

Symmetric RelationMinimum PairsClass 12Relations And FunctionsMathematicsClass 12 Mcq

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