(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