Question

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?

Answer 1

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 :)<span />