Решение задачи N4393 теория вероятностей
4393. There are twelve balls in the box, three of them are black and nine are white. Two balls are taken out at random. Find the probability that the balls will be of different colors.
Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)
Оплата и выдача товара осуществляются через партнёрскую платформу.