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A(1), A(2) and A(3) are three events. S...

`A_(1), A_(2) and A_(3)` are three events. Show that the simultaneous occurrence of the events is
`P(A_(1) cap A_(2) cap A_(3))=P(A_(1))P(A_(2)//A_(1))P[A_(3)//(A_(1) cap A_(2))]`
State under which condition
`P(A_(1) cap A_(2) cap A_(3))=P(A_(1))P(A_(2))P(A_(3))`

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