1.已知 P(A)=1/2 , P(B)=1/3 , (AB)=1/10, 则 (overline (A)cap overline (B))= __

设P（A）=(1)/(3)，P（B）=(1)/(4)，P（A∪B）=(1)/(2)，求P（overline(A)∪overline(B)），P（overline

1.设 (AB)=P(overline (A)overline (B)), 且 (A)=p, 求P(B).

5.设随机事件A,B,C的概率都是 1/2, 且 (ABC)=P(overline (A)cap overline (B)cap overline (C)) ,

(A)P(overline(AB))=0; (B)P(AB)=P(A.)P(B.); (C.)P(A)=1-P(B); (D.)P(overline(A)c

(2)已知P(A)=1/2,P(B)=1/3,P(C)=1/5,P(AB)=1/10,P(AC)=1/15,P(BC)=1/20,P(ABC)=1/30,求Ac

已知P（A）=0.4，P（B）=0.3，P（B|overline(A)）=0.4．求：（1）P（overline(A)B）；（2）P（overline(A)ov

4.已知事件A与B相互独立，且P(overline(AB))=(1)/(9)，P(overline(AB))=P(overline(AB))，求P(A)，P(B

1.(1)已知P(overline(A))=0.3，P(B)=0.4，P(Aoverline(B))=0.5，求P(B|A∪B)；1.(1)已知$P(\over

3.设A，B为两事件，已知P(A)=(1)/(3)，P(A|B)=(2)/(3)，P(B|overline(A))=(1)/(10)，求P(B).3.设A，B为

(1)已知A,B两个事件满足 (AB)=P(overline (A)B) ,且 P(A)=p ,则 P(B)= __-|||-__