une urne contient N boules dont M boules blanches et N−M boule noires on tire successivement et sans remise n boules de l′urne. soit A_i :′′prelever une boules noires au ieme tirage′′ calculer P(A


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Question Number 145583 by ArielVyny last updated on 06/Jul/21

$u n e u r n e c o n t i e n t N b o u l e s d o n t$ $M b o u l e s b l a n c h e s e t N - M b o u l e n o i r e s$ $o n t i r e s u c c e s s i v e m e n t e t s a n s r e m i s e$ $n b o u l e s d e l^{'} u r n e .$ $s o i t A_{i} :^{″} p r e l e v e r u n e b o u l e s n o i r e s a u i e m e$ ${t i r a g e}^{″}$ $c a l c u l e r P (A_{i})$
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