Решение задачи N4488 теория вероятностей
4488. There are 20 white and 25 black balls in the urn. Two balls are taken out of the urn at once. Find the probability that these balls 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.