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anonymous

  • one year ago

A bag has 5 red marbles, 6 blue marbles and 4 black marbles. What is the probability of picking a black marble, replacing it, and then picking a black marble? A. 4/15 B. 8/75 C.16/225 D. 5/14

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  1. anonymous
    • one year ago
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    is it A.?

  2. anonymous
    • one year ago
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    the probability of picking a black marble is 4 out of 15 every time

  3. anonymous
    • one year ago
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    because there is always 15 marbles in the bag and 4 of them are always black

  4. anonymous
    • one year ago
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    goodjob!

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