Решение задачи N3390 теория вероятностей
3390. A student has learned 20 questions out of 35. What is the probability that he knows the answer to two of the three questions suggested.
Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)
Оплата и выдача товара осуществляются через партнёрскую платформу.