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A technician is launching fireworks near the end of a show. Of the 14 remaining fireworks, nineare blue and five are red. If she launches six of them in a random order, what is the probability that exactly 4 of them are blue ones?

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Answer:

(6 choose 4) * (9/14 * 8/13 * 7/12 * 6/11) * (5/10 * 4/9) = 60/143 = 0.4196

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