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    jstew08's Avatar
    jstew08 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Jan 31, 2008, 08:33 PM
    ProBaBiliTy WitH VaRiaBleS iNsTead Of Numbers
    Digit d is randomly selected from the set {1, 2, 3, 4, 5, 6, 7, 8,
    9}. Without replacement of d, another digit, e is selected. What
    is the probability that the two digit number de is a multiple of 3?

    ... >>>this is for my math bonus! Any help will be appreciated=]
    PolluxCastor's Avatar
    PolluxCastor Posts: 117, Reputation: 5
    Junior Member
    		  
    #2

    Jan 31, 2008, 09:25 PM
    Remember, this is for your math bonus, not mine.
    Maybe I can ask you some questions that may help.

    How many numbers are in the set [de]?
    Is [ed] the same set?
    Can you describe the set [de]?

    I think that might help, take a little time to think on that.
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