1.已知 为两个随机事件,且 (A)=dfrac (1)(2) , (B)=dfrac (3)(5) , (B|A)=dfrac (4)(5), 求:-|||-(1) (Acup B); (2) (A-B); (3) [ overline (B)|(Acup B)]

2.设A,B为两个事件,且 (A)=dfrac (1)(4), (B|A)=dfrac (1)(3), (A|B)=dfrac (1)(2), 求 (Acup

19.设A,B为两个随机事件,且 (A)=dfrac (1)(3), (B|A)=dfrac (1)(4), (A1B)=dfrac (1)(2) 则-|||-

(B|A)=dfrac (1)(3) . (A|B)=dfrac (1)(2), 求 (Acup B).

[题目]设A,B是两事件,已知 (A)=dfrac (1)(4) (B)=-|||-1/2, (AB)=dfrac (1)(8), 求 (Acup B)(ov

(5)设 (A)=dfrac (1)(3), (B)=dfrac (1)(4), (Acup B)=dfrac (1)(2), 则 (overline (A)c

3.已知 (A)=dfrac (1)(3), (B|A)=dfrac (1)(4) ,(A|B)=dfrac (1)(6), 则 (Acup B)= __

(B|A)=dfrac (1)(3) .(A|B)=dfrac (1)(2), 则-|||-(Acup B)= __ 。

已知 (A)=dfrac (1)(2) ,(B)=dfrac (1)(3) ,-|||-(C)=dfrac (1)(5) ,(AB)=dfrac (1)(10)

已知 (A)=dfrac (1)(2) , (B)=dfrac (1)(3) , (C)=dfrac (1)(5)-|||-, (AB)=dfrac (1)(1

已知 (A)=dfrac (1)(2) ,(B)=dfrac (1)(3) ,-|||-(C)=dfrac (1)(5) ,(AB)=dfrac (1)(10)