An improper subset is identical to the set of which it is a subset. For example: Set A: {1, 2, 3, 4, 5} Set B: {1, 2, 3, 4, 5} Set B is an improper subset of Set A and vice versa.
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A proper subset is any subset of a set which is not the whole of that set. Any set is always a subset of itself. But it is not a proper subset of itself.
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An improper subset is a subset containing every element of the original set. A proper subset contains some but not all of the elements of the original set. The empty set is a proper
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If a set has n elements the total number of subsets is 2^n, so for the one you've given, 6 elements so 2^6 subsets i.e. 64. Source(s) Retired Maths Teacher.
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