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A bag contains 5 red marbles, 9 white marbles, and 5 blue marbles. You draw 4 marbles out at random, without replacement. What is the probability that all the marbles are red?

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  1. For first red marble, 5/19. For second red marble, (5-1)/(19-1), continue on for 3rd and 4th marbles and then multiply.

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