Решение задачи N2416 теория вероятностей

2416. Three arrows shoot at the target. The probability of hitting the target for the first arrow is 0.75, and for the second - 0.8, and for the third - 0.9. Find the probability that:
a) All three arrows will hit the target;
b) Only one shooter hits the target;
c) All three will miss;
d) At least one shooter hits the target.

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