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On (A={1,2,3}), (R={(a,b):ab>0}). Is (R) reflexive or not?

Answer and explanation

Correct answer: Reflexive

Step 1: All elements of (A) are positive. Step 2: For a self-pair, (ab=a^2), which is greater than (0) for every (a\in A). Step 3: In product conditions, check (a^2) for reflexivity.

Related tags

Product RelationPositive SetReflexiveReflexive RelationRelations And FunctionsMathematicsClass 12 Mcq

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