Решение задачи N3031 теория вероятностей
3031. There is an urn in which there are 8 white and 5 black balls. Determine the probability that when sampling from an urn of two balls, they will be black.
Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)
Оплата и выдача товара осуществляются через партнёрскую платформу.