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14 March, 09:16

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

8/75

4/45

1/9

+3
Answers (1)
  1. 14 March, 09:46
    0
    There are 15 total marbles in the bag, of which 6 are blue nd 4 are black.

    The probability of pulling a blue marble from the full bag is 6/15.

    The probability of pulling a black marble from the full bag is 4/15.

    The probability of both events happening is

    (6/15) x (4/15) = 24/225 = 8/75
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