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On (A={1,2,3}), starting from (R={(1,2),(2,3)}), how many pairs will the smallest relation containing (R) and being reflexive, symmetric and transitive have?

Answer and explanation

Correct answer: (9)

Step 1: ((1,2)) and ((2,3)) connect all three elements into one equivalence class. Step 2: In one class, every ordered pair between the elements must be present. Step 3: A class of (3) elements gives (3^2=9) pairs.

Related tags

RelationsEquivalence-ClosureClosureExpertIntroduction To RelationsRelations And FunctionsMathematicsClass 12 Mcq

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