SOLUTION: what is the number of subsets of set B = {12, 14, 16, 18, 20, 22, 24}? Thank you

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Question 307188: what is the number of subsets of set B = {12, 14, 16, 18, 20, 22, 24}?
Thank you
Answer by jim_thompson5910(35256) About Me  (Show Source):
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It turns out that the number of subsets of a set A is 2%5En where 'n' is the number of elements in the set. So in this case, there are 7 elements in the set making n=7 meaning that there are 2%5E7=128 different possible subsets.