b***k
发帖数: 2673 | 1 ☆─────────────────────────────────────☆
coldking (冷面王) 于 (Sun Nov 30 23:11:58 2008) 提到:
[Problem] We play a game, with a fair coin. The game stops when either three
heads (H) or tails (T) appear consecutively. What is the expected number to
flip the coin until the game stops?
PS: If it is "two consecutive H or T", the solution is easy. But how to
solve this "three consecutive H or T" problem?
Thanks!
☆─────────────────────────────────────☆
SuperString (阳阳加油) 于 (Sun Nov 30 23:53:31 2008) |
|
