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    Probability - Balls

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    A box contains 7 red, 3 green and 5 blue balls.

    a) If one ball is drawn at random, find the probability it is red.

    b) If two balls are drawn, find the probability both are green

    c) If two balls are drawn, find the probability one is red and the other is blue

    d) If two balls are drawn, find the probability both are red or both are green.

    e) If two balls are drawn, find the probability at least one is red.

    © BrainMass Inc. brainmass.com February 24, 2021, 2:07 pm ad1c9bdddf
    https://brainmass.com/math/probability/drawing-different-colored-balls-2781

    Solution Preview

    Total number of balls: 7 + 3 + 5 = 15
    Assuming no replacement:
    a) P(ball is red) = 7/15
    b) P(both are green) = (3/15)*(2/14)
    = 6/210
    = ...

    Solution Summary

    There are several probability questions regarding drawing different colored balls.

    $2.19

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