[题目]设 P(A)=a , P(B)=b , (Acup B)=c ,则-|||-P(AB)为 ()-|||-A、 a-b-|||-B、 c-b-|||-C、 a(1-b)-|||-D、 b-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);-

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

A Acup B=Omega B AB=emptyset C P(overline(A)cupoverline(B))=1 D P(A-B)=

[题目]设A,B为随机事件, P(A)=0.7 ,-|||-P(B)=0.5 ,P(A-B)=0.3 ,求P(AB)、 P(B-A)-|||-、P(B|A)

4.设随机事件A,B,C相互独立,P(A),P(B), (C)in (0,1) ,则必有 () .-|||-(A) A-B 与 B-A 独立 (B)AC 与 B

设A,B,C相互独立, (A)=P(B)=P(C)=0.5, 则 (Acup Bcup C)=-|||-[填空1]

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

P(AB) =P(A)P(B | A)C.若AB，则P(AB)=P(A)D . P(AB) =P(B)P(A| B)设AB为两个任意事件,且P(A)>0,P(B

7.设A,B,C为三个事件,求下列各题:-|||-(1)若 P(A)=0.4 ,P(B)=0.25 ,P(A-B)=0.25 ,求 P(B-A) .-|||-(

5.已知P(A)=0.7，P(B)=0.5，(Acup B)=0.9，则P(AB)=( )A、0.3 B、0.2 C、0.5