Q2.6

MCQ2 marks, −0.5

Let $P(S)$ denotes the power set of set $S.$ Which of the following is always true?

(A)

$P(P(S)) = P(S)$

(B)

$P(S) ∩ P(P(S)) = \{ Ø \}$

(C)

$P(S) ∩ S = P(S)$

(D)

$S ∉ P(S)$

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