Решение задачи N2819 теория вероятностей
2819. In the urn 2 white and 7 black balls. From it, they remove 2 balls at random (without return). What is the likelihood that both 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.