Решение задачи N1833 теория вероятностей Бернулли схема

1833. The probability that a change machine will not operate correctly when one coin is lowered is 0.07. How many coins should be lowered so that the most probable number of cases of correct operation of the machine would be 100.

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