Solution of problem N2833 probability theory

Solution of problem N2833 probability theory

2833. In a group of 25 students. Of these, 3 people perfectly wrote the test, 5 people wrote well, 10 people satisfactorily, the rest wrote a test paper unsatisfactory. Find the probability that among the five students called to the blackboard, three received unsatisfactory on the test paper.

Additional information:

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