SOLUTION: Without writing them all out, what is the number of subsets of set B = {12, 14, 16, 18, 20, 22, 24} can someone walk me through this

Question 411002: Without writing them all out, what is the number of subsets of set B = {12, 14, 16, 18, 20, 22, 24}
can someone walk me through this
Answer by richard1234(7193) (Show Source): You can put this solution on YOUR website!
It suffices to find the number of ways to choose a distinct subset from B. Go term-by-term. 12 can or cannot be in the subset, so two possibilities for the 12. 14 can or cannot be in the subset, as well. Since there are seven terms, this leaves , or 128, subsets (including the empty set and the set B).
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