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Math Help - Probability problem

  1. #1
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    Probability problem

    I am forwarding my problem first time.
    I need your help to solve one question on Probability.

    Question: When 4 dice are thrown (each numbered from 1 to 6), calculate the probability that all the numbers facing up are different.
    The answer given is 0.2778.I need help to solve this question.
    thanks for your time

    Avinash
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  2. #2
    Grand Panjandrum
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    Quote Originally Posted by avinash
    I am forwarding my problem first time.
    I need your help to solve one question on Probability.

    Question: When 4 dice are thrown (each numbered from 1 to 6), calculate the probability that all the numbers facing up are different.
    The answer given is 0.2778.I need help to solve this question.
    thanks for your time

    Avinash
    Suppose that the dice are throw in order. There are 6^4 different results.

    Of these results, the favourable ones number the number of ways of choosing
    4 items from a set of 6 distinct items of 6.5.4.3.

    Now the probability is the ratio of favourable outcomes to total number of
    possible outcomes, so:

    <br />
p=\frac{6.5.4.3}{6^4}\approx 0.2778<br />

    RonL
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  3. #3
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    Many thanks
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