Alex has 5 pieces of paper, each with a different math problem. In how many ways can he give these problems to his 10 friends (he can give each friend more than one problem), if every friend must get at least one problem?
+122 For each note just assign a student number which can be repeated among the notes.
This is a \(5\) digit base \(10\) number and thus there are \(10^5 = 100000\) ways to distribute the problems.
