Question 268980: How many improper subsets (including the set itself) are possible for the set (a,b,c,d)?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! How many improper subsets (including the set itself) are possible for the set (a,b,c,d)?
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Each subset either has or does not have a,b,c, or d.
There are 2^4 choices.
So there are 2^4 = 16 subsets including the set itself and the empty set.
Cheers,
Stan H.
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