（2）、$A,B,C$至少两个发生
A: ${(ABC)}\cup{(\bar{A}BC)}\cup{(A\bar{B}C)}\cup{(AB\bar{C})}$
B: ${(\bar{A}BC)}\cup{(A\bar{B}C)}\cup{(AB\bar{C})}$
C: ${A}\cup{B}\cup{C}$
D: ${(\bar{A}\bar{B}\bar{C})}\cup{(\bar{A}B\bar{C})}\cup{(\bar{A}\bar{B}C)}\cup{(A\bar{B}\bar{C})}$
A: ${(ABC)}\cup{(\bar{A}BC)}\cup{(A\bar{B}C)}\cup{(AB\bar{C})}$
B: ${(\bar{A}BC)}\cup{(A\bar{B}C)}\cup{(AB\bar{C})}$
C: ${A}\cup{B}\cup{C}$
D: ${(\bar{A}\bar{B}\bar{C})}\cup{(\bar{A}B\bar{C})}\cup{(\bar{A}\bar{B}C)}\cup{(A\bar{B}\bar{C})}$
举一反三
- 题目包含多个选项，但学生只能选择一个答案。<br/>设A,B,C表示三个随机事件，请问下列事件应如何用A,B,C表示<br/>（2）、$A,B,C$至少两个发生 A: ${(ABC)}\cup{(\bar{A}BC)}\cup{(A\bar{B}C)}\cup{(AB\bar{C})}$ B: ${(\bar{A}BC)}\cup{(A\bar{B}C)}\cup{(AB\bar{C})}$ C: ${A}\cup{B}\cup{C}$ D: ${(\bar{A}\bar{B}\bar{C})}\cup{(\bar{A}B\bar{C})}\cup{(\bar{A}\bar{B}C)}\cup{(A\bar{B}\bar{C})}$
- 已知$P(B)=0.4$，$P(A\cup B)=0.5$，则$P(A|\bar B)=$( )
- cup of / piece of / bar of / drop of / lump of /bottles of/pairs ofPlease bring us two_______ beers.
- (1). 如果两个事件 \( A,B \) 相互独立，则下面四个选项哪个是正确的（ <br/>）。 A: \( AB=\phi \) B: \( P(\bar {A}B)=P(\bar {A})P(B) \) C: \( P(A\cup B)=P(A)+P(B) \) D: \( P(AB)=0 \)
- Let me give you a _____ of advice. A: cup B: piece C: bar D: drop E: lump F: bottles G: pairs