This problem from American Mathematics contest (AMC 8, 2019) will help us to learn more about Stick and Dot Method. Try it out!
Alice has 24 apples. In how many ways can she share them with Becky and Chris so that each of the three people has at least two apples?
American Mathematical Contest 2019, AMC 8 Problem 25
Combinatorics
7 out of 10