Fun Probability Question 来源: TCT

Fun Probability Question
来源: TCT 于 09-11-09 13:14:30 [档案] [博客] [旧帖] [转至博客] [给我悄悄话]





If you had $10,000 to start with, and staked 50% of your balance on the toss of a fair coin. Heads, you win as much as you staked; tails you lose your stake. So if the first toss is a win, you have $15,000 for the next play, and can stake 7,500; and if the first toss is a loss, you have $5,000 for the next play, and can stake 2,500. What is the probability of having more than $10,000 balance after 30 tosses? or 100 tosses?

所有跟帖： 

• 回复：Fun Probability Question 来源: TCT -zeal626- ♂ (198 bytes) () 11/09/2009 postreply 23:37:50

• hmmm -dynamic- ♂ (184 bytes) () 11/10/2009 postreply 02:44:00

• I like this problem.... -乱弹- ♂ (97 bytes) () 11/10/2009 postreply 20:38:21

• 回复：Fun Probability Question 来源: TCT -Commentate- ♂ (163 bytes) () 11/11/2009 postreply 18:32:37

• Therefore -Commentate- ♂ (124 bytes) () 11/12/2009 postreply 11:22:55

• 回复：Fun Probability Question 来源: TCT -AceOnRiver- ♂ (773 bytes) () 11/12/2009 postreply 17:47:40

• 答案 -胖地主- ♂ (42 bytes) () 11/12/2009 postreply 19:31:40