Statistics
posted by Savannah .
Suppose a bag contains 7 red chips, 8 black chips, and 3 green chips. You draw two chips (without replacement) from the bag. Find the probability that you drew a red chip ﬁrst and then a black chip second.

Red = 7/18
Black = 8/17
To find the probability that both (all) events would occur, multiply the probabilities of the individual events.