设A，B，C为三个事件，则表示（）．

A . A∪B∪CB . A（B∪C.C . AB∪AC∪BCD .https://assets.asklib.com/psource/2015110316382041507.png

A . PC.≤PA.+PB.-1 B . PC.≥PA.+PB.-1 C . PC.≤P（AB. D . PC.≤P（A∪B.

A . 0≤PA.≤1 B . P（A∪B∪C.=PA.+PB.+PC. C . P（Ф）=0 D . P（S）=1

A . b=c B . a⊥b且a⊥c C . a=0或b-c=0 D . a⊥（b-C.

设A，B，C是三个事件，且A与B互不相容，P(C)＞0，求证：P((A∪B)|C)=P(A|C)+P(B|C)．

A．A-B=A B．AC=<img src='https://img2.soutiyun.com/ask/uploadfile/6123001-6126000/a7262300a73b5a85b5eae4010acd2164.png' />C．A∪B∪C=Ω D．ABC=<img src='https://img2.soutiyun.com/ask/uploadfile/6123001-6126000/53340b5c478915128a4d4364c6b0643a.png' />

A．<img src='https://img2.soutiyun.com/latex/latex.action' /> B．<img src='https://img2.soutiyun.com/latex/latex.action' /> C．<img src='https://img2.soutiyun.com/latex/latex.action' /> D．<img src='https://img2.soutiyun.com/latex/latex.action' /> E．<img src='https://img2.soutiyun.com/latex/latex.action' />

设A，B，C是三个事件，求证：P((A∪B)-C)=P(A∪B∪C)-P(C)．

2 设三个事件A，B，C两两互不相容，且P(A)=0.2，P(B)=0.3，P(C)=0.4，求概率P((A∪B)-C)．

<span style="font-family: arial, helvetica,sans-serif; font-size: 16px;">2 设三个事件A，B，C两两独立，且P(A)=P(B)=P(C)=1/2，P(ABC)=1/5，求概率</span><span style="color: rgb(51, 51, 51); text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: arial, helvetica,sans-serif; font-size: 16px; font-style: normal; font-weight: normal; word-spacing: 0px; float: none; display: inline !important; white-space: normal; orphans: 2; widows: 2; background-color: rgb(255, 255, 255); font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px;">A不发生B不发生C发生</span><span style="font-family: arial, helvetica,sans-serif; font-size: 16px;">．</span>

设A、B为两个事件，则P(AB)可表示为()。 A．P(A).P(B) B．P(A).P(A|B) C．P(B).P(A|B)，P(B)＞0 D．1-P(A).P(B)

A．P(A︱B∪C)＝0.3 B．P(B∪C)＝0.6 C．P(A︱B∪C)＝0.5 D．P(A（B∪C）)＝0.18

设A，B，C是三个相互独立的随机事件，且0＜P(C)＜1，问<img src='https://img2.soutiyun.com/ask/2020-11-24/97508370740437.jpg' />是否相互独立？