What is the total number of …
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Yogita Ingle 5 years, 1 month ago
The number of sets of a set containing n-elements =2n .
A proper subset of a set is the set whose elements are in the given set, but it is not equal to the set.
Let S be a subset of A, S is called Proper subset if and only if it is a subset of A, and S ≠ A .
So, The number of proper subsets of a set containing n-elements is 2^{ n }- 1
As, The number of subsets contains a improper subset that is the set itself, so 1 is subtracted from number of total subsets to get number of proper subsets.
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