Therefore

来源: Commentate 于 2009-11-12 11:22:55 [] [旧帖] [给我悄悄话] 阅读数 : (124 bytes)
本帖于 2009-12-19 10:42:34 时间, 由普通用户 康MM 编辑
回答: Fun Probability Question 来源: TCT 由 都是国人 于 2009-11-09 13:44:37

If you toss 30 times you are expected to have $133.63 left
If you toss 100 times you are expected to have half penny left

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