06-02-2019
Mathematics

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A bag contains six real diamonds and five fake diamonds. If six diamonds are picked from the bag at random what is the probability that at most four of them are real?

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mathecoach mathecoach

06-02-2019

Answer:

((6 choose 4) * (5 choose 2) + (6 choose 5) * (5 choose 1) + (6 choose 6) * (5 choose 0)) / (11 choose 6) = 181/462 = 0.3918

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