设随机事件A,B相互独立, P(A)=0.2 ,P(B)=0.5 ,则 (overline (A)cup overline (B))=() .

设事件A、B相互独立，P(A)=0.2，P(B)=0.7，则P(A∪overline(B))=（）.A. 0.24B. 0.34C. 0.44D. 0.84

设A，B，C为三个事件，且P(overline(A)cup overline(B))=0.9，P(overline(A)cup overline(B)cup o

设事件A，B相互独立，且P（overline(A)∩overline(B)）=(1)/(9)，P（Aoverline(B)）=P（overline(A)B），则

设事件A与B互不相容, P(A)=0.4 ,P(B)=0.3 ,则-|||-(overline (A)overline (B))= __ , (overline

设事件A与B互不相容, P(A)=0.4 ,P(B)=0.3 ,则-|||-.(overline (A)overline (B))= __ , (overlin

设P(A)=0.5，P(B|A)=0.6，P(overline(A)B)=0.1，则P(overline(A)cap overline(B))=( )A. 0

随机事件 A,B 满足 (A)=P(B)=dfrac (1)(2), 且 (Acup B)=1, 则 (overline (A)cup overline (B)

设 P(A)=0.3, P(B)=P(C)=0.2，且事件 A, B, C 两两互不相容，则 P(overline(A cup B cup C))= ( ).A

5.设A,B,C为三个随机事件,且 (overline (A)cup overline (B))=0.8 (overline (A)cup overline (

设事件A与B互不相容, (A)=0.4, P(B)=0.3 ,则-|||-(overline (A)B)= __ , (overline (A)cup B)=