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Math Help - probability

  1. #1
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    probability

    (1) If four positive integers are taken and at random and multiplied together,then the

    probability that the last digit is 1,3,7 or 9 is.

    (2) In a throw of two dice,the probability throwing doublets not more than twice is
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  2. #2
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    Quote Originally Posted by jacks View Post
    (1) If four positive integers are taken and at random and multiplied together,then the probability that the last digit is 1,3,7 or 9 is.  (2) In a throw of two dice,the probability throwing doublets not more than twice is
    You should understand that this is not a homework service nor is it a tutorial service.
    PLease either post some of your own work on this problem or explain what you do not understand about the question.

    BTW: As written the answer to part 2 is zero.
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  3. #3
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    Quote Originally Posted by Plato View Post

    BTW: As written the answer to part 2 is zero.
    Should that be one rather than zero (not more than twice is one or zero times, or have I missed something)??

    CB
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    Quote Originally Posted by CaptainBlack View Post
    Should that be one rather than zero (not more than twice is one or zero times, or have I missed something)??CB
    I missed that not.
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