There are 11 clean individual socks in your sock drawer. There is only one matching pair among them. In the dark, you reach into the drawer and randomly pick 2 socks. What is the probability that you choose the matching pair? Write your answer as a fraction in simplest form.

Answer 1

there are 11C2 ways of picking to socks ... 11C2 = (11 * 10) / (2 * 1)

there is one way of selecting a matching pair

matching pairs / total pairs = ?