Probability 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 selecting another gold chip?

Question

Probability 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 selecting another gold chip?

vocaloid · Answer

any ideas?

studytheworld · Answer

Well since there's 10 chips in the bag and three are gold, I thought the first one would be a 3/10 chance of getting a gold chip... am I right?

vocaloid · Answer

good but there's one more step

vocaloid · Answer

what about the second gold chip?

studytheworld · Answer

Yeah, after that wouldn't it be 2/9?

vocaloid · Answer

perfect! then you just multiply 3/10 times 2/9

studytheworld · Answer

Ohh okay that makes sense. I was trying to add the two numbers.