2014 Combinatorics #1: Probability Same Class
Source:
February 23, 2014
probability
Problem Statement
There are students who want to sign up for the class Introduction to Acting. There are three class sections for Introduction to Acting, each of which will fit exactly students. The students, including Alex and Zhu, are put in a lottery, and 60 of them are randomly selected to fill up the classes. What is the probability that Alex and Zhu end up getting into the same section for the class?