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A symmetric relation (R) on (A={1,2,3}) contains ((1,3)) and ((2,3)). Which of the following sets must definitely be a subset of (R)?

Answer and explanation

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

Step 1: In a symmetric relation, the reverse of each given pair is compulsory. Step 2: From ((1,3)), we need ((3,1)), and from ((2,3)), we need ((3,2)). Step 3: Only the required reverse pairs are guaranteed, not unrelated diagonal or other pairs.

Related tags

RelationsSymmetric RelationSubsetClass 12Relations And FunctionsMathematicsClass 12 Mcq

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