回复：有缺陷的硬币 Correct answer

这个题目前几礼拜我去对冲基金面试的时候考过，我答对了。
(考官说对就是对，不对也对)
Toss the coin twice, you have 4 cases:
(head, tail)
(head, head)
(tail, head)
(tail, tail)
The probability of (head, tail) is the same
as (tail,head)
So you can define (head, tail) as head
and (tail, head) as tail.
If you get the other two cases, toss it twice
more!
BTW，这家基金最后给我offer了:-p

所有跟帖： 

• 有可能永远不出结果 --binomial- ♀ (94 bytes) () 11/29/2004 postreply 15:34:28