# math

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Given a set with n elements has 2^n subsets.Find the number of subsets for set A={2,3,5,7,11}.

• math -

well, how many elements in A?

• math -

Oh thanks..its 2^5=32..

• math -

correct. The power set of A P(A) is the set of all subsets of A. These would be

{}, {2}, {3},...{2,3},{2,5},... and so on up to A itself.

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