Let A1, A2,... be arbitrary events in ((, A), and define Bm by: Bm = Am is

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Let A1, A2,... be arbitrary events in ((, A), and define Bm by: Bm = "Am is the first event which occurs among the events A1, A2,...," m ‰¥ 1. Then
(i) Express Bm in terms of Ans, m ‰¥ 1.
(ii) Show that B1, B2,... are pair-wise disjoint.
ΣΕΙ Bm = U An- Вт -m=1 n=1 %3D
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