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
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?