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On the power set of (S={1,2,3}), (XRY) when (X\subset Y). How many pairs must be added to make (R) reflexive?

Answer and explanation

Correct answer: 8

Step 1: The power set has (2^3=8) elements. Step 2: In the proper subset relation, no pair ((X,X)) is included. Step 3: To make it reflexive, add ((X,X)) for every (X), so 8 pairs must be added.

Related tags

Proper SubsetPower SetMake ReflexiveHardReflexive RelationRelations And FunctionsMathematicsClass 12 Mcq

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