Решение задачи N1264 теория вероятностей Пуассона

1264. The spinner serves 1000 spindles. The probability of breaking a thread on one spindle within one minute is 0.003. Find the probability that for exactly one minute there will be exactly two cliffs, less than two cliffs, more than two cliffs, at least one cliff.

Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)