Решение задачи N2551 теория вероятностей
2551. In the urn there are 7 white and 5 black balls. Find the probability that 1) at random the drawn ball turns out to be black; 2) two randomly drawn 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.