Решение задачи N4475 теория вероятностей
4475. The urn contains 9 white and 6 black balls of the same weight and size. What is the probability that 2 balls taken at random will be of different colors?
Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)
Оплата и выдача товара осуществляются через партнёрскую платформу.