Решение задачи N4707 теория вероятностей полиномиальный

4707. For each lottery ticket, with a probability of 0.2, a big win can fall, with a probability of 0.2, a small win, and with a probability of 0.6, the ticket can be without a win. Bought 14 tickets. Determine the probability of getting 2 big wins and 3 small ones.

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