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If a relation (R) contains ((1,2),(2,1),(2,3),(3,2),(1,3)) and no other off-diagonal pair, what is necessary for symmetry?

Answer and explanation

Correct answer: ((3,1)) must be added

Step 1: The pair ((1,2)) has its reverse ((2,1)). Step 2: The pair ((2,3)) has its reverse ((3,2)). Step 3: The reverse of ((1,3)), namely ((3,1)), is missing, so it must be added.

Related tags

Ordered PairsSymmetric RelationClass 12Exam PracticeRelations And FunctionsMathematicsClass 12 Mcq

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