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A dish contains 20 gumballs - 9 blue, 6 red and 5 white. We randomly select two gumballs from the dish without replacement.
a) 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 2P(X = x)
b) What is the probability that X = 1 if no red gumballs are selected?
c) What is the expected value of X?
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