Решение задачи N4448 теория вероятностей
4448. There are 7 white balls and 12 black balls in the urn. At the same time, 2 balls are taken out at random. What is the probability that both balls will be white?
Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)
Оплата и выдача товара осуществляются через партнёрскую платформу.