题目[题目]设两两相互独立的三个事件A,B,C满足条-|||-件: =x-|||-(A)=P(B)=P(C)lt dfrac (1)(2)-|||-且已知 (Acup Bcup C)=dfrac (9)(16) 则-|||-__-|||-(A)=-|||-__题目解答答案