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Math Help - Logic

  1. #1
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    Logic

    three men one man always tells the truth, one always tells lies, and one answers yes or no randomly. Each man knows which man is who. You may ask three yes/no question to determine who is who. If you ask the same question to more than one person you must count it as question used for each person whom you ask. What three questions should you ask?
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  2. #2
    Super Member Showcase_22's Avatar
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    lol, have you seen the episode of Yu-gi-oh!???

    (the one with the Yugi and Joey tag team duel with the Paradox brothers!?!?!)

    Anyway, this was in that episode. I just have to remember how it goes....

    1).Are you the truthful one?
    Truthful person: Yes
    Lying person:Yes
    Yes/no guy: yes/no

    2).Is that the truth?
    Truthful person:Yes
    Lying person: no
    Yes/no guy: yes/no

    This is when I reach a problem because there is no guarantee that if I repeated the question the yes/no guy would answer differently. I'll leave you to try and find a third question, hopefully you can get the gist of what i'm trying to do.

    Yugi didn't need to solve a problem this hard!
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