19) A bag contains 3 green, 7 brown, 9 yellow, and 5 blue marbles. Once a marble is
selected, it is not replaced. Find each probability.
a) P(brown, then yellow)
b) P(green, then blue)
c) P(yellow, then yellow)
d) P(blue, then blue)
e) P(green, then not blue)
f) P(brown, then not green)