There are 9 red gum balls, 5 green gum balls, 8 yellow gum balls, and 8 blue gum balls in a machine. Find P(green, then yellow).
(1 point)
40/900
5/30
8/30
40/870
P(green, then yellow) = (5/30) * (8/29) = 40/870
Therefore, the correct answer is 40/870.