2.设(A)=0.5, (B)=0.7, (Acup B)=0.9.试计算(A)=0.5, (B)=0.7, (Acup B)=0.9..

已知(A)=0.5, (Acup B)=0.7,若A与B互不相容，则(A)=0.5, (Acup B)=0.7,=()A 0.2 B 0.5 C 0.7 D无法

设事件A，B相互独立，(Acup B)=0.7 P(A)=0.4，则(Acup B)=0.7 P(A)=0.4A.0.7B.0.6C.0.5D.0.4设事件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

[题目]已知 (A)=0.7, (B)=0.4, (Aoverline (B))=0.5, 则-|||-(Acup overline (B)B)= __

设A与B是两个事件，已知P(A)=0.5，P(B)=0.7，(Acup B)=0.8，则(Acup B)=0.8________ A 0.1 B 0.3 C 0

13.已知 (A)=0.7, (B)=0.4, (Aoverline (B))=0.5, 求 (B|Acup overline (B)).

设事件A与B相互独立，已知P(A)=0.4，(Acup B)=0.7，试求P(B|A).设事件A与B相互独立，已知$$P(A)=0.4$$，，试求$$P(B|A

12、设A与B是两个事件,已知 P(A)=0.5 (B)=0.7, (Acup B)=0.8, 处-|||-P(AB)= __-|||-(A)0.1 (B)0.

已知(overline (Acup B))=0.2 P(B)=0.5，问（1），P(A-B)= ;(2)(overline (Acup B))=0.2

设 P ( A ) = 0.3 , (Acup B)=0.8，若 A 与 B 互斥则 P ( B - A ) = ( ) 。A 0.7B