This link has the proof of two and three head

來源: wxcfan123 於 2011-09-19 12:59:52 [] [舊帖] [給我悄悄話] 閱讀數 : (115 bytes)
回答: 請示網址, 由 jinjing 於 2011-09-19 10:48:40

http://kawaii.elliottback.com/expected-number-of-coin-tosses-before-twothree-consecutive-heads-are-obtained/

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