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Math Help - probability

  1. #1
    cheqtel
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    probability

    A dice is loaded so that the numbers 1, 2, and 3 are equally likely to appear. 4, 5, and 6 are also equally likely to appear, but 1 is three times as likely as 4 to appear. What is the probability of getting an odd number?

    Having trouble with this one.

    Cheq
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  2. #2
    MHF Contributor

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    Quote Originally Posted by cheqtel View Post
    A dice is loaded so that the numbers 1, 2, and 3 are equally likely to appear. 4, 5, and 6 are also equally likely to appear, but 1 is three times as likely as 4 to appear. What is the probability of getting an odd number? Having trouble with this one.
    I am not surprised!
    There is no such a thing as a dice. There is a die.
    There are two dice.
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  3. #3
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    Ok. Still if it is a die. and I agree that it is not a dice. What would the answer be?

    pwr
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  4. #4
    Grand Panjandrum
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    Quote Originally Posted by cheqtel View Post
    A dice is loaded so that the numbers 1, 2, and 3 are equally likely to appear. 4, 5, and 6 are also equally likely to appear, but 1 is three times as likely as 4 to appear. What is the probability of getting an odd number?

    Having trouble with this one.

    Cheq
    As the sum of the probabilities must be 1, let the prob of a 4 showing be p,

    then:

    (3*p + 3*p + 3*p) + (p + p + p) = 12p =1.

    and I hope you can solve this from here.

    RonL
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