A set contains \( n \) elements. The power set contains (A) n eleme...

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A set contains \( n \) elements. The power set contains
(A) n elements
(B) \( 2^{n} \) elements
(C) \( n^{2} \) elements
(D) none of these
\( \mathrm{P}_{\mathrm{P}} \)
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