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解概率问题

jinjing 2010-09-23 20:41:42 ( reads)

回答: 一副52张扑克牌,洗匀之后揭上面5张, 由 金属米 于 2010-04-22 19:41:28
同花顺:10*4/C(52,5)=0.000015391

四头:C(13,1)*C(4,4)*C(48,1)/C(52,5)=.000240096

同花:C(13,5)*C(4,1)/C(52,5)-0.000015391=0.001965401

3,2(Fullhouse):)C(4,3)*C(4,2)*P(13,2)/C(52,5)=0.00140576

顺:10*4^5=0.003940038-0.000015391=0.003924647,

三:C(13,1)*C(4,3)*C(48,1)*C(44,1)/C(52,5)=.042256903

2对:C(13,2)*C(4,2)*C(4,2)*C(44,1)/C(52,5)=0.047539016

队:C(4,2)*C(48,1)*C(44,1)*C(40,1)*P(2,2)/C(52,5)=0.390063718

荒:C(52,1)*C(48,1)*C(44,1)*C(40,1)*C(36,1)/P(52,5)-0.000015391-0.001965401-0.003940038=0.501162003

跟帖(2)

加油!!!

2010-09-23 22:02:48

谢谢了!可是看不明白。能不能解释一下比如FULLHOUSE?

jinjing

2010-09-24 16:18:59

FULLHOUSE