不好意思再问一个吧

xuxujianjingUID: 2465309

Fair coins are tossed and when either four consecutive heads or tails appear the process will be stopped. What is the
probability of two consecutive head or tail or any one of them in one row?

xiaoqingwangUID: 2169561

63/64= 1-2(1/2)^7
h,t,h,t,h,t,h
t,h,t,h,t,h,t
的余集

xuxujianjingUID: 2465309

不是说出现四个连续的才停止吗？