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    mashell's Avatar
    mashell Posts: 5, Reputation: 1
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    #1

    Mar 29, 2011, 01:07 PM
    if you have 3 white tiles, 3 gray tiles, and 3 striped tiles what is the probability
    if you have 3 white tiles, 3 gray tiles, and 3 striped tiles what is the probability of picking a gray tile and then picking a white tile?
    smoothy's Avatar
    smoothy Posts: 25,490, Reputation: 2853
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    #2

    Mar 29, 2011, 01:17 PM

    What's the formula for this?.
    How would you approach it.


    https://www.askmehelpdesk.com/financ...ard-25444.html
    mashell's Avatar
    mashell Posts: 5, Reputation: 1
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    #3

    Mar 29, 2011, 01:29 PM

    Thanks so much for your help I did try but could not get the answer that was one of the multiple choice answers I got 1/8 if it is without replacement which it does not say thanks for nothing
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #4

    Mar 29, 2011, 10:34 PM

    Well, the way to get this is:

    Probability to get 1 grey tile: 3/9 = 1/3

    there are 3 grey tiles and 9 tiles to pick from.

    Then, the probability to get 1 white tile = 3/8

    there are 3 white tiles and 8 tiles left total.

    The net probability is 1/3 * 3/8 = 1/8

    Which means, your answer is correct :)
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