Sets, Relations and Functions - Arithmetic Aptitude Questions and Answers

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The power set P((A × B) ∪ (B × A)) has the same number of elements as the power set P((A × B) ∪ (A × B)) if and only if

A = B

A = ∅ or B = ∅

B = ∅ or A = B

A = ∅ or B = ∅ or A = B

Answer : Option D

Explanation :

A = ∅ or B = ∅ or A = B

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