what is the formula for finding the number of subsets?
If a set contains 'n' elements, then the number of subsets of the set is 22. Number of Proper Subsets of the Set: If a set contains 'n' elements, then the number of proper subsets of the set is 2n - 1. In general, number of proper subsets of a given set = 2m - 1, where m is the number of elements.