5968概率中等数值题medium
Waiting Time for the Pattern HTHH
题目
A fair coin is flipped repeatedly. Using a martingale (gambling-team) argument, find the expected number of flips until the pattern H, T, H, H first appears.
解题计时
0:00
提交作答时记录，用于后续平均用时统计。
你的答案
题目
A fair coin is flipped repeatedly. Using a martingale (gambling-team) argument, find the expected number of flips until the pattern H, T, H, H first appears.
解题计时
0:00
提交作答时记录，用于后续平均用时统计。
你的答案