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16 August, 20:59

A bag has five red marbles, six blue marbles, and four black marbles. What is the probability of picking a blue marble, replacing it, and then picking another blue marble?

A. 1/15

B. 8/75

C. 4/25

D. 1/9

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  1. 16 August, 21:17
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    The total number of marbles is 15. The probability of picking a blue marble is 6/15. After putting the marble back, the probability of picking another blue marble is probably 1/9.

    Answer: the probability of picking two blue marbles in a row is 1/9.
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