Решение задачи N2921 теория вероятностей
2921. From an urn containing 5 red, 3 black and 2 white balls, 3 balls are randomly extracted. Find the probability that among the extracted exactly 2 blacks.
Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)
Оплата и выдача товара осуществляются через партнёрскую платформу.