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On (A={2,3,4,6,12}), (aRb) is defined when (a) divides (b). Which statement correctly proves transitivity?

Answer and explanation

Correct answer: If (a\mid b) and (b\mid c), then (a\mid c)

Step 1: In divisibility, (a\mid b) means (b=ak). Step 2: If (b\mid c), then (c=bl), so (c=a(kl)), which means (a\mid c). Step 3: In proof-based questions, writing the definition in algebraic form is best.

Related tags

Divides RelationProof BasedTransitivityClass 12Transitive RelationRelations And FunctionsMathematicsClass 12 Mcq

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