Решение задачи N4418 теория вероятностей
4418. There are 8 red and 7 blue balloons in an opaque bag. The seller without looking takes two balls out of the bag. What is the probability that both balls will be blue?
Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)
Оплата и выдача товара осуществляются через партнёрскую платформу.