Решение задачи N2909 теория вероятностей
2909. In the urn there are 5 white and 15 black balls, two balls are randomly taken out of the urn. What is the probability that they will be white.
Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)
Оплата и выдача товара осуществляются через партнёрскую платформу.