Решение задачи N4647 теория вероятностей
4647. There are 15 textbooks randomly placed on a shelf, 5 of them in soft cover. The student takes 3 textbooks. Find the probability that at least one of them is in paperback.
Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)
Оплата и выдача товара осуществляются через партнёрскую платформу.