Решение задачи N982 теория вероятностей Пуассона

982. The textbook is published in 10,000 copies. The probability that the copy of the textbook is not properly stitched is 0.0001. Find the probability that:
a) the circulation contains 5 defective books;
b) at least 9998 books are properly stitched.

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