1、单选题：
设随机事件A，B满足关系 .w64975584953s .brush0 { fill: rgb(255,255,255); } .w64975584953s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64975584953s .font0 { font-style: italic; font-size: 377px; font-family: "Times New Roman", serif; } .w64975584953s .font1 { font-size: 347px; font-family: Symbol, serif; } .w64975584953s .font2 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } AB É ,则下列表述正确的是（ ）.
选项：
A:A , B同时发生.
B:若A发生, 则B必不发生.
C:若A发生, 则B必发生.
D:若A不发生，则B一定不发生.
答案: 【若A不发生，则B一定不发生.】

2、单选题：
设A，B为任意两个事件，则下列关系式成立的是（ ）.
选项：
A:(AU B)-B＝A
B:(AU B)-B A
C:(A—B)U B＝A
D:(AU B)-B
答案: 【(AU B)-B A】

3、单选题：
随机事件A与B互不相容，且P（A）＞P（B）＞0，则（ ）.
选项：
A:P(AB)=1
B:P(A)=1-P(B)
C:.w64975585010s .brush0 { fill: rgb(255,255,255); } .w64975585010s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64975585010s .pen1 { stroke: rgb(0,0,0); stroke-width: 19; stroke-linejoin: round; } .w64975585010s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64975585010s .font1 { font-size: 374px; font-family: 宋体; } .w64975585010s .font2 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } PAB1-P(AB) （ ） ＝
D:P(AB)=P(A)P(B)
答案: 【.w64975585010s .brush0 { fill: rgb(255,255,255); } .w64975585010s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64975585010s .pen1 { stroke: rgb(0,0,0); stroke-width: 19; stroke-linejoin: round; } .w64975585010s .font0 { font-size: 406px; font-family: "Times New Roman", serif; } .w64975585010s .font1 { font-size: 374px; font-family: 宋体; } .w64975585010s .font2 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } PAB1-P(AB) （ ） ＝】

4、单选题：
设随机事件A, B满足P(A|B)=1, 则下列结论正确的是（ ）.
选项：
A:B是必然事件.
B:.w64975584979s .brush0 { fill: rgb(255,255,255); } .w64975584979s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64975584979s .font0 { font-size: 377px; font-family: "Times New Roman", serif; } .w64975584979s .font1 { font-style: italic; font-size: 377px; font-family: "Times New Roman", serif; } .w64975584979s .font2 { font-size: 347px; font-family: Symbol, serif; } .w64975584979s .font3 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } ()() PABPB = .
C:A是必然事件.
D:.w64975584991s .brush0 { fill: rgb(255,255,255); } .w64975584991s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64975584991s .font0 { font-style: italic; font-size: 377px; font-family: "Times New Roman", serif; } .w64975584991s .font1 { font-size: 347px; font-family: Symbol, serif; } .w64975584991s .font2 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } ABB = .
答案: 【.w64975584979s .brush0 { fill: rgb(255,255,255); } .w64975584979s .pen0 { stroke: rgb(0,0,0); stroke-width: 1; stroke-linejoin: round; } .w64975584979s .font0 { font-size: 377px; font-family: "Times New Roman", serif; } .w64975584979s .font1 { font-style: italic; font-size: 377px; font-family: "Times New Roman", serif; } .w64975584979s .font2 { font-size: 347px; font-family: Symbol, serif; } .w64975584979s .font3 { font-weight: bold; font-size: 76px; font-family: System, sans-serif; } ()() PABPB = .】

5、单选题：
设随机事件A与B互不相容, 且有P(A)>0, P(B)>0, 则下列关系成立的是（ ）.
选项：
A:A, B不互为对立事件.
B:A, B相互独立.
C:A, B不相互
D:A, B互为对立事件.
答案: 【A, B不相互】