lijian736
这个题目是<<Introduction to Probability Models>>(Sheldon M. Ross)书中的一个题目,我费了一下午也没有做出来,很着急。请大家帮帮忙。
原题目是:
A and B play until one has 2 more points than the other. Assuming that each point is independently won by A with probability p, what is the probability they will play a total of 2n points? what is the probability that A will win?
小弟不知道怎么做,请大家帮帮忙。能把解题的过程给出吗?谢谢大家了。