4712. Each lottery ticket with probability p1=0.21 may get a big win, with probability p2=0.39 a small win, and with probability p3=0.4 the ticket may end up without a win. Bought n=14 tickets. Determine the probability of getting n1=4 big wins and n2=4 small ones.
Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)
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