bag has 2 green marbles, 3 red marbles, and 3 yellow marbles. What is the probability that you pick a red marble, do not replace it, and pick yellow marble?

Ok ... so there is a total of 8 marbles. its a 3 out of 8 chance that you would get a red marble, when you do get it, you dont replace it so there is now a total of 7 marbles. Then you want a yellow marble so that is now 3 out of 7 chance.

(3/8) * (3/7) = is about 16% chance

P (red) then P (yellow)

3/8 * 3/7 = 9/56