SOLUTION: without writing them all out, what is the number of subsets of set b={12,14,16,18,20,22,24,26,28}?

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Question 395531: without writing them all out, what is the number of subsets of set b={12,14,16,18,20,22,24,26,28}?
Answer by richard1234(7193) About Me  (Show Source):
You can put this solution on YOUR website!
Each element of B can either be in a subset or not be in a subset. There are nine elements, so the number of subsets is 2%5E9.