Решение задачи N4508 теория вероятностей
4508. From the urn, in which there are 13 white and 9 black balls, two balls are taken out at random. What is the probability that both balls will turn out to be black?
Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)
Оплата и выдача товара осуществляются через партнёрскую платформу.