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Old 07-17-2007   #10
Dr D
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If you say the answer is anything other than 1/2, it's because you are making up details as you go along.Some answerers above say that if they see 100 men, then it's a strong indication that a lot of men are present. Another person would say that if they see 100 men pass by, there can't be too many left. Without details, the answer is 1/2.RE: Lobster's answer.I agree that if 100 men pass by in a row, the prob of that = 0.5^100. But if 50 men and 50 women pass by in an alternating fashion (M-W-M-W...), the prob of that is also 0.5^100.