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On (A={1,2,3}), (R={(1,2),(2,1)}). Is (R) transitive?

Answer and explanation

Correct answer: No, because ((1,1)) and ((2,2)) are required

Step 1: From ((1,2)) and ((2,1)), transitivity requires ((1,1)). Step 2: Similarly, from ((2,1)) and ((1,2)), ((2,2)) is required. Both are missing, so (R) is not transitive. Step 3: Reverse pairs can force reflexive pairs in transitivity checks.

Related tags

Relations FunctionsReverse PairsTransitive RelationRelations And FunctionsMathematicsClass 12 Mcq

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