If $B = {d, e, f}$ , then the number of elements in the power set of $B$ is:

0

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1

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8

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4

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Solution

The correct option is C $8$
$B = {d, e, f}$
Number of subsets $= 2^{n}$ , where $n$ is the number of elements
$= 2^{3} = 8$

So, the number of elements in the power set of $B$ is $8$ .

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