Решение задачи N2569 теория вероятностей
2569. In the urn 4 white and 5 black balls. Two balls are taken out of the urn at random. Find the probability that one ball is black and the other is white?
Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)
Оплата и выдача товара осуществляются через партнёрскую платформу.