b***k
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chopinor (lonelycat) 于 (Tue Nov 10 21:22:23 2009, 美东) 提到:
Keep tossing one coin until either HHHT or HTHT shows up
(1) What is the probability of having HHHT？
(2) What is the expected time of the stopping time?
(3) The variance of the stopping time?
The answer should be general enough to handle any pattern.
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Jadeson (Jadeson) 于 (Tue Nov 10 21:41:51 2009, 美东) 提到:
前面两个都可以用MC来做，最后一个怎么解？
谢谢。
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