Q. 14.2( 21 Votes )

# Mark the correct alternative in the following:

For any set A, (A’) is equal to

A. A’

B. A

C. φ

D. none of these

Answer :

Here, Question is

Now, A'=U∖A

⇒(A' )'=(U∖A)'=U'∖A'

⇒(A' )'=U'∖(U∖A)

⇒(A' )'=ϕ∖U+A

⇒(A' )'=A

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