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There are 12 yes or no questions. How many ways can these be

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There are 12 yes or no questions. How many ways can these be [#permalink] New post 07 Oct 2003, 20:29
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There are 12 yes or no questions. How many ways can these be answered?

1) 1024
2) 2048
3) 4096
4) 144

could you explain?

Thanks
Praetorian
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 [#permalink] New post 07 Oct 2003, 23:30
1q=2 ways (yes or no)
2q=2 ways (yes or no)
................................
2^12=4096
  [#permalink] 07 Oct 2003, 23:30
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There are 12 yes or no questions. How many ways can these be

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