Решение задачи N2778 теория вероятностей
2778. A group of tourists, in which 7 boys and 4 girls, are chosen by lot on four duty men. What is the probability that 2 boys and 2 girls will be selected?
Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)
Оплата и выдача товара осуществляются через партнёрскую платформу.