Q. 33.8( 5 Votes )

Mark the correct alternative in the following:

The number of subsets of a set containing n elements is

A. n

B. 2n 1

C. n2

D. 2n

Answer :

Let A be the set with n elements.


Each member of A has two possibilities either present or absent.


Total possible subsets of A are 2×2×2×…n times = 2n

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