question_answer

Let A and B be two sets then \[(A\cup B)'\cup (A'\cap B)\] is equal to

A) A?

B)                                A

C) B?

D)        None of these

Correct Answer: A

Solution :

[a]From Venn-Euler?s diagram. \[\therefore \,\,\,(A\cup B)'\cup (A'\cap B)=A'\]