Решение задачи N1052 теория вероятностей Лапласа

1052. 200 machines work independently of each other, and the probability of uninterrupted operation of each of them during the shift is 0.8. Find the probability that during the shift they will work without fail: a) 180 machines; b) from 150 to 170 machines.

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