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(A∪B) ∩ (B∪A) = __________(a) A(b) B(c) A∪B(d) A∩BI have been asked this question in an international level competition.This interesting question is from Operation on Sets-2 topic in chapter Sets of Mathematics – Class 11

Answer»

Right OPTION is (c) A∪B

Easiest explanation: (A∪B) ∩ (B∪A) = (A∪B) ∩ (A∪B) (COMMUTATIVE law)

= A∪B (A∩A=A).



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