A dish contains 20 gumballs - 9 blue, 6 red and 5 white. We randomly select two gumballs from the dish without replacement.
(b) Let X be the number of blue gumballs selected. Complete the probability distribution of X by filling in the appropriate probabilities below:
x 0 1 2
P(X = x)
(c) What is the probability that X = 1 if no red gumballs are selected?
(d) What is the expected value of X?