一副扑克牌有四种花色,共52张,从中任取3张 (1)抽取的3张牌都是黑桃的概率是多少 (2)抽取

2024-12-26 11:12:29
推荐回答(1个)
回答1:

(1)黑桃共有13张,C(13,3)/C(52,3)=0.0129
(2)C(13,1)*C(13,2)/C(52,3)=0.0459
(3)A只有4张,C(4,3)/C(52,3)= 1.8100e-04
(4)C(4,1)*C(13,3)/C(52,3)=0.0518
(5)C(4,3)*C(13,1)*C(13,1)*C(13,1)/C(52,3)=0.3976