a. A bag contains 3 black marbles, 6
blue marbles, and 4 green marbles. If a marble is
drawn from the bag, replaced, and another marble is drawn, what is
the probability of drawing first a black marble and then a green
marble? Round to 4 decimal places
b. A bag contains 6 yellow marbles, 4
green marbles, and 3 blue marbles. If two
different marbles are drawn from the bag , what is the
probability of drawing first a yellow marble and then
a blue marble? Round to 4 decimal places