Решение задачи N4377 теория вероятностей
4377. The box contains 15 red and 5 blue balls. Take out 2 balls at random. What is the probability that both balls are red?
Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)
Оплата и выдача товара осуществляются через партнёрскую платформу.