2.对于任意的事件A、B、C，已知 P(A)=0.6, P(B)=0.4, P(C)=0.2, 求:(1) P(Aoverline(B))=0.3, 求 P(Acup B);(2) P(Acup B)=0.8, 求 P(overline(A)B);(3) 若AC=∅, P(AB)=P(BC)=0.1, 求 P(Acup Bcup C).

2.(6分)对于任意的事件A、B、C，已知 P(A)=0.6, P(B)=0.4, P(C)=0.2, 求: (1) $P(A\overline{B})=0.3$, 求 $P(A\cup B)$; (2) $P(A\cup B)=0.8$, 求 $P(\overline{A}B)$; (3) 若AC=∅, P(AB)=P(BC)=0.1, 求 $P(A\cup B\cup C)$.

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