Suppose a bag contains 7 blue chips and 3 gold chips. What is the probability of randomly choosing a gold chip, not replacing it, and then randomly choosing another gold chip?
The probability would be 1/15. The first draw, taking a gold coin is 3/10. Since we don't replace it, we draw again, but a value less- 2/9. We multiply that together and get 6/90, then simplify it :)
