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Math Help - Problem on probability

  1. #1
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    Problem on probability

    Needed help to solve algebra 1 homework

    What is the probability of drawing two balls of the same color from a box containing 20 white balls and 10 black balls?

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  2. #2
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    Re: Problem on probability

    Well on the first try what is the probability of getting a white ball? If you remove that white ball, what is the probability of getting a white ball on the second try? What would that mean the probability of them both being white is?

    Then do the same thing for the black balls...
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