这道概率题谁会？想了好久也没办法

来源: 于 2025-01-04 14:45:00 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

A fair coin is tossed repeatedly until either heads comes up three times in a row or tails comes up three times in a row. What is the probability that the coin will be tossed more than $10$ times? Express your answer as a common fraction. 

有没有通俗易懂的办法？