5969概率中等数值题medium
Three Consecutive Sixes
题目
A fair six-sided die is rolled repeatedly. Using a martingale (gambling-team) argument, find the expected number of rolls until three sixes appear in a row.
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提交作答时记录，用于后续平均用时统计。
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题目
A fair six-sided die is rolled repeatedly. Using a martingale (gambling-team) argument, find the expected number of rolls until three sixes appear in a row.
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