you are right as the P(HHT)=P(HTT)=1/8,but My solution is for tw

来源: jinjing 于 2011-09-28 18:31:17 [档案] [旧帖] [给我悄悄话] 本文已被阅读： 0 次 (90 bytes)

回答: If I am interpreting it right, it's 1/2 由北京大老猫于 2011-09-28 18:02:19

one by one,so the first is easier to win.the formular are (1/8)/(1-(7/8)^2)=.533333

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