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    orange7117's Avatar
    orange7117 Posts: 1, Reputation: 1
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    #1

    May 30, 2009, 04:22 PM
    Statistics and Probability
    Consider a box containing 3 blue, 2 red, and 5 clear marbles.

    When drawing 2 marbles without replacements, chances of drawing a blue then clear is?
    galactus's Avatar
    galactus Posts: 2,271, Reputation: 282
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    #2

    May 30, 2009, 05:13 PM
    The prob. Of drawing a blue is 3/10. See?

    Since we are not replacing, there are 9 left, so the prob. Of drawing a clear is 5/9

    (3/10)(5/9)=1/6
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