2.设A,B是两个事件,已知P(A)=0.25,P(B)=0.5, P(AB)=0.125,求(Acup B), P(AB),P(AB),-|||-__ __(Acup B), P(AB),P(AB),-|||-__ __

2.设A,B是两个事件,已知 P(A)=1/4 (B)=1/2, (AB)=1/8, 求 (Acup B),-|||-P(AB),P(AB ), [ (Acup

(Acup B)P(AB)leqslant P(A)P(B) B (AB)geqslant P(A)P(B)(Acup B)P(AB)leqslant P(A)

求-|||-(1)P(A),P(B ); (2)P(AB);-|||-(3) (Acup B); (4)P(AB);-|||-(5)P(AB),P(BA).

巳知 P(A)=0.4 ,P(B)=0.25 ,P(A-B)=0.25 ,求P(AB), (Acup B) ,P(B-A) ,P(AB).-|||-已知 P(A

(1)设事件A与B相容,则有 ()-|||-(A) (Acup B)=P(A)+P(B);-|||-(B) (Acup B)=P(A)+P(B)-P(AB);-

A、B为两个事件，P(A)=0.4，P(B)=0.3，P(Acup B)=0.6，则P(AB)=（）A. 0.1B. 0.2C. 0.3D. 0.4

[题目]已知AC B, P(A)=0.4 , P(B)=0.6 ,求-|||-(1)P(A),P(B);-|||-(2) (Acup B) ;-|||-(3)P

9.设P(Acup B)=0.6，P(overline(AB))=0.4，P(B)=0.5则P(overline(Acap B))=_.9.设$P(A\cup

若 A, B 为任意两个随机事件, 则 ( )。(A) (AB)leqslant P(A)P(B)(B) (AB)leqslant P(A)P(B)(C)

对任意两个随机事件AB，有P(A+B)=P(A)+P(B)+P(AB)A. 对B. 错