SOLUTION: What is the number of yes/no vote combinations with 9 voters?

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Question 865339: What is the number of yes/no vote combinations with 9 voters?
Answer by jim_thompson5910(35256) About Me  (Show Source):
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There are 2 possible choices and 9 slots (to represent each person), so there are 2*2*2*2*2*2*2*2*2 = 2^9 = 512 different ways for the voters to vote yes/no.