Решение задачи N4458 теория вероятностей
4458. The urn contains 10 white and 20 black balls. Both balls are taken out of the urn at random. What is the probability that the balls 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.