b***k
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Ithink (牛夫人) 于 (Thu May 1 13:36:50 2008) 提到:
Toss a fair coin until we get a 5H in a row or 2T in a row. What's the probability of getting 5H in a row at the end of the game prior to 2T in a row?
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xiaoxiaokuan (小小矿) 于 (Thu May 1 15:08:05 2008) 提到:
=sum((1/2)^i) where i=5,6,7....
=(1/2)^5
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Ithink (牛夫人) 于 (Thu May 1 15:20:48 2008) 提到:
emm... not exactly what I wan |
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