Решение задачи N4431 теория вероятностей
4431. The urn contains 10 red and 5 blue balls, and the balls are thoroughly mixed. Remove 3 balls at random. Find the probability that at least one of these balls turns out to be blue.
Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)
Оплата и выдача товара осуществляются через партнёрскую платформу.