Let P(S) denote the power set of set S. Which of the following is a

1.	Let P(S) denote the power set of set S. Which of the following is always TRUE ?
A.	S ∉ P(S)
B.	P(P(S)) = P(S)
C.	P(S) ∩ S = P (S)
D.	P(S) ∩ P(P(S)) = [ φ ]
Answer» E.

Discussion

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