作者mt1064 (AIG)
看板Grad-ProbAsk
标题[理工] 统计
时间Fri Apr 3 15:51:17 2009
Each game you play is a win with probability p. You plan to play 5 games,but
if you win the fifth game then you will keep on playing until you lose.
Find the excepted number of games that you lose.
这题有人知道怎麽做吗?
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