Решение задачи N2870 теория вероятностей
2870. In the urn 7 red and 6 blue balls. Two balls are randomly taken out of the urn. Find the probability that they are the same color.
Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)
Оплата и выдача товара осуществляются через партнёрскую платформу.