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 0.5 D 0

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 (A)=0.5, (Acup B)=0.8, P(A-B)=0.2，则 (A)=0.5, (Acup B)=0.8, P(A-B)=0.2 的值为 A 0

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

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

设A，B为两个随机事件，P(A)=0.5，P(A)=0.5，则P(A)=0.5.A.0.1B.0.2C.0.3D.0.7设A，B为两个随机事件，，，则.A.0.

A，B为两事件，若(Acup B)=0.8，(Acup B)=0.8，则（）成立.A.(Acup B)=0.8B.(Acup B)=0.8C.(Acup B)=

已知P(A)=0.5,P(B)=0.6,P(B|A)=0.8,则P(B|A)=0.8________A.0.6B.0.7C.0.8D.0.9已知P(A)=0.5

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

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),-|||-__ __