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Math Help - Probability

  1. #1
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    Probability

    Hey guys !

    I need help with the problem below:

    If a fair 6-sided die is rolled once, what is the probability of rolling a 3 or an odd number?

    Thanks,
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  2. #2
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    Re: Probability

    Quote Originally Posted by fsiwaju View Post
    If a fair 6-sided die is rolled once, what is the probability of rolling a 3 or an odd number?

    T is the event of rolling a three, O is the event of rolling an odd.

    \mathcal{P}(T\cup O)=\mathcal{P}(T)+\mathcal{P}(O)-\mathcal{P}(T\cap O).
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  3. #3
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    Re: Probability

    Consider Efronís non-transitive dice where the 6 faces as are in the table below.


    Die A 0 0 4 4 4 4
    Die B 3 3 3 3 3 3
    Die C 2 2 2 2 6 6
    Die D 1 1 1 5 5 5

    Suppose there are four players in the game and each will choose one die and roll it. The person
    who rolls the smallest number will be eliminated. For each die, calculate the probability that
    the smallest number observed occurs on that die. Now which die would you choose (assuming
    you want to stay in the game rather than reading a good book, having root canal work, etc.)?


    plpease help me. Thank you
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  4. #4
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    Re: Probability

    Here is the OP.
    Quote Originally Posted by fsiwaju View Post
    If a fair 6-sided die is rolled once, what is the probability of rolling a 3 or an odd number?
    What does the reply have to do with that?



    Quote Originally Posted by vijaysingh View Post
    Consider Efronís non-transitive dice where the 6 faces as are in the table below.
    Die A 0 0 4 4 4 4
    Die B 3 3 3 3 3 3
    Die C 2 2 2 2 6 6
    Die D 1 1 1 5 5 5

    Suppose there are four players in the game and each will choose one die and roll it. The person
    who rolls the smallest number will be eliminated. For each die, calculate the probability that
    the smallest number observed occurs on that die. Now which die would you choose (assuming
    you want to stay in the game rather than reading a good book, having root canal work, etc.)?
    If this is a request for help: Start a new thread

    Do not hijack someone else's thread.
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