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8 May, 11:33

A bag has 5 red marbles, 6 blue marbles and 4 black marbles. What is the probability of picking a blue marble, replacing it, and then picking a red marble?

A) 8/75

B) 3/5

C) 2/15

D) 4/45

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Answers (1)
  1. 8 May, 12:21
    0
    Probability of picking a blue marble : 6 / 15 = 2/5

    Probability of picking a red marble: 5 / 15 = 1/3

    2/5 * 1/3 = 2/15

    Answer: C) 2/15
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