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anonymous

  • one year ago

A box contains 3 red and 7 green balls. You are going to choose 3 balls, 1 at a time, without replacement. Find the probability that you will choose 3 green balls. 7/24 21/30 42/720 343/1000

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  1. anonymous
    • one year ago
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    may I know how did you approached this question?

  2. anonymous
    • one year ago
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    This is one of my homework questions that I am stuck on.

  3. anonymous
    • one year ago
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    ok... you can choose 3 green balls from 7 green balls as 7C3 out of total balls 10C3 P= 7C3/10C3

  4. anonymous
    • one year ago
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    My book shows combinations in a different way, as C(3,7), is that the same as you are stating?

  5. anonymous
    • one year ago
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    Thank you!

  6. anonymous
    • one year ago
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    yep.. welcome

  7. anonymous
    • one year ago
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    :)

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spraguer (Moderator)
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