Решение задачи N2408 теория вероятностей

2408. The shooter makes 3 shots at the target. The probabilities of hitting at the first, second, third shots are respectively equal to 0.4; 0.5; 0.7. Find the probability that as a result of these shots will be: a) one hit in the target; b) at least one hit.

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