SOLUTION: given that number of subset of a set A is 16. find the number of elements in A

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Question 840484: given that number of subset of a set A is 16. find the number of elements in A
Answer by Fombitz(32388) About Me  (Show Source):
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Number of subsets grow as 2%5En where n is the number of elements.
2%5En=16
n=4