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    If i was appoching a cross roads ,and thier was two brothers ,and one always lied,while the other always told the trouth,and i could only ask one question,to find out wether to turn left or right ,how woud i pose that question??

    Note: you do not know which brother is the truth teller or the liar. 

    +3  Views: 653 Answers: 7 Posted: 7 years ago
    Colleen

    Moderator
    pfffft

    7 Answers

    "What direction will your brother tell me is the better path to take?"


    The truthful brother will tell you the wrong direction (because that is what his brother will say).  The liar will also tell you the wrong direction (because his brother would tell you the right way, so the liar will NOT tell you that). 


    Go the opposite direction. 

    Ducky

    Moderator
    Deep. :)
    Colleen

    Moderator
    But you can only ask one question. So once you ask one of those questions, you can not now ask which direction to take.
    Bob/PKB

    edited answer.
    THANKS, "HECTOR"!!

    It's Saturday and I'm toasting pecans. Busy and you want me to think? Pooh on you.......

    Bob/PKB

    I've spent the morning pulling weeds from what should have been my back yard, and vegetating in front of the computer. Hope you are feeling better. Remember, the end result is going to be worth the pain and suffering. You can't say that about everything in life!!

    I wouldn't pose the question to either one, knowing that I had only a 50-50 chance of going the right way!  Hey, I've approached many crossroads in life and guess what? I was actually right about half the time!    LOL!!!

    Don't ask! Drive on to the next servo & buy a map.

    Ducky

    Moderator
    Well, who would have thought of that!!! :)

    I guess it depends on where you are going! UPS (United Parcel Service) in the USA this past year told all their drivers to make right turns! They said it would save gas or fuel!

    Bob/PKB

    Oh, brother. What genius came up with that.
    clu

    Heh heh heh! The truthful brother? I still say we don't know where we are going so which way to turn is moot!

    Why not just ask the brother who always tells the truth? 

    hector5559

    but you dont know ,which one tells the truth or lies,Colleen,
    ROMOS

    Which one would that be??
    Colleen

    Moderator
    Well now you didn't say that, did you? ;)
    I was just messing with you. I knew you missed putting in that part. :)
    hector5559

    Oh dratt,put it in for me,O.L.L.Then how would the question be posed,
    Colleen

    Moderator
    The man would ask either one of them, "What would your brother say?"

    If the right path is the correct path, then:

    The lying brother (would lie about what his brother would say) would answer, "He will tell you to turn left"

    The truth telling brother will say, "My brother lies so he will tell you to turn left".

    So the right path is the correct path to take.
    hector5559

    That about wraps itt up,Colleen,

    If I were to ask your brother if the road to the right is the one I should  take to continue my journey, would you agree with him?

    hector5559

    VERY NEARLY,


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