3.已知 (A)=dfrac (1)(3), (B|A)=dfrac (1)(4) ,(A|B)=dfrac (1)(6), 则 (Acup B)= __
1.已知 (A)=P(B)=dfrac (1)(3) (A|B)=dfrac (1)(6), 则P(AB)= () .-|||-
dfrac (1)(12)-|||-(B) dfrac (1)(2) .-|||-C dfrac (1)(8)-|||-) dfrac (1)(6)
已知 (A)=dfrac (1)(2) ,(B)=dfrac (1)(3) ,-|||-(C)=dfrac (1)(5) ,(AB)=dfrac (1)(10)
已知 (A)=dfrac (1)(2) , (B)=dfrac (1)(3) , (C)=dfrac (1)(5)-|||-, (AB)=dfrac (1)(1
已知 (A)=dfrac (1)(2) ,(B)=dfrac (1)(3) ,-|||-(C)=dfrac (1)(5) ,(AB)=dfrac (1)(10)
(5)设 (A)=dfrac (1)(3), (B)=dfrac (1)(4), (Acup B)=dfrac (1)(2), 则 (overline (A)c
(B|A)=dfrac (1)(3) .(A|B)=dfrac (1)(2), 则-|||-(Acup B)= __ 。
)-|||-则 cot (XY)=() 。-|||-A .-dfrac (1)(18) .-|||-B .dfrac (1)(18)-|||-C .dfrac
10、单选-|||-极限 lim _-|||-A-|||-dfrac (1)(6)-|||-B dfrac (1)(2)-|||-C -dfrac (1)(3)