- Thread starter
- #1

- Feb 5, 2012

- 1,621

**Nabeela Zubair on Facebook writes:**

How I can solve this problem?

Students are choosing 2 colors to be used as school colors. There are 10 colors from which to choose. How many different ways are there to choose 2 different colors?

Total Colors 3 4 5 6 7 8 9 10

# of 2-color Comb. 3 6 10