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 0.3 B 0.2 C 0.8 D 0.6

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

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

B 满足 (Aoverline (B))=0.2, (B)=0.5, P(A|B)=0.8,则(Aoverline (B))=0.2, (B)=0.5, P(A

[题目]已知 (A)=0.5, (B)=0.4, P(A-B)=0.3, 则-|||-(Acup B)= __

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P(A)=0.5，P(B|A)=0.8，P（B)=0.3，则P(A-B)=_____。设P(A)=0.5，P(B|A)=0.8，P（B)=0.3，则P(A-B

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

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)=

设事件A与B相互独立,且满足(A)=0.2, (Acup B)=0.8,则P(B) =______.设事件A与B相互独立,且满足,则P(B)=______.

3.已知事件A、B独立, P(A)=0.6 ,P(B)=0.5 ,则 P(A-B) 等于 ()-|||-A、0.1 B、0.2 C、0.3 D、0.25