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On the set (A={1,2,3}), the relation (R={(1,1),(2,2),(3,3),(1,2),(2,1),(2,3)}) is given. Which minimum ordered pair must be added to make (R) symmetric?

Answer and explanation

Correct answer: ( (3,2) )

Step 1: In a symmetric relation, if ((a,b)) is present, then ((b,a)) must also be present. Step 2: ((2,3)) is present but ((3,2)) is missing, while ((1,2)) and ((2,1)) already form a pair. Step 3: In exams, always check the reverse of every non-diagonal ordered pair.

Related tags

Symmetric RelationOrdered PairsClass 12 RelationsRelations And FunctionsMathematicsClass 12 Mcq

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