4th grade math problem

Here is a 4th grade math problem. I did not know the answer. who will be the smartest one here?

Colin, Kai, and Sampson are playing a dice game. Colin goes first, Kai second, and Sampson third. The first person to roll a three wins and game is oever. The dice are continuously passed in the above order until some one wins. What is the probability that Sampson wins?

所有跟帖： 

• 回複：4th grade math problem -華倫久費- ♂ (418 bytes) () 02/28/2010 postreply 20:33:20

• 25/91 -jjmmjj- ♂ (56 bytes) () 02/28/2010 postreply 22:22:54

• 對頭！ -倪達業- ♂ (279 bytes) () 03/01/2010 postreply 11:27:22

• 對不起，不懂。這個結果應該是每輪有人贏得機會是91/216 -Mr.Coffee- ♂ (77 bytes) () 03/02/2010 postreply 12:13:08

• 同意此答案 -沒落貴族- ♂ (0 bytes) () 03/02/2010 postreply 15:00:38

• 回複：4th grade math problem -StudentDing- ♂ (18 bytes) () 03/01/2010 postreply 09:39:15

• 1/3, Everyone has the same chance -Mr.Coffee- ♂ (0 bytes) () 03/02/2010 postreply 11:16:37

• sorry, it should be 155/1296 -Mr.Coffee- ♂ (209 bytes) () 03/02/2010 postreply 11:31:11

• I am wrong again, it is hard to believe this is a 4th grade math -Mr.Coffee- ♂ (0 bytes) () 03/02/2010 postreply 11:43:20

• 同學們，這是笑壇，要不把帖子轉到子女教育那邊去？ -沒落貴族- ♂ (0 bytes) () 03/02/2010 postreply 14:55:40