Решение задачи N4703 теория вероятностей полиномиальный

4703. For each lottery ticket, with a probability of 0.1, a big win can fall, with a probability of 0.21, a small win, and with a probability of 0.69, the ticket can turn out to be without a win. Bought 14 tickets. Determine the probability of getting 1 big win and 4 small ones.

Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)