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10-10-2007, 05:28 PM
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 can you solve 1 simple problem :) ? Well i got more then 1 but for first time i'll state only 1. The problem: on one cross-street live 2 twins from which 1 of them ALWAYS says the TRUTH 2nd of them ALWAYS says the LIE The street is leading to points A and B and they both live in the middle lets say you want to go to point A(but you dont know which is the way to it) what question(only one question) would you ask so you find out which is the way to A?       |
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10-10-2007, 06:49 PM
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| hihihi, I know, I know...  edit: seeker5, you spoiler! asking one of them what the other one would have said and doing the opposite is enough, btw. |
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10-10-2007, 08:04 PM
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| The answer is you ask Guy A: If I asked Guy B which street I should go down, what will he say? If street A is the correct way to go down and guy A is the truthful one, he will reply: He'll say to go down street B. If street A is the correct way to go down and guy A is the liar, he will reply: He'll say to go down street B. In either case, you want to go down street A. If street B is the correct way to go down and guy A is the truthful one, he will reply: He'll tell you to go down street A. If street B is the correct way to go down and guy A is the liar, he will reply: He'll tell you to go down street A. In either case, you go down the opposite street from the answer.
__________________ Erin Pavlina, Intuitive Counselor Spiritual Wisdom for Conscious People Blog (Twitter Page, Facebook Page) Get a reading | Read Testimonials | About Erin "Erin's reading was unbelievably insightful. In just 20 minutes she helped me sort through 4 major areas of my life that I've been struggling with in therapy for more than 8 years! I was stunned. I'm truly amazed at her abilities, and I am so thankful I found her when I did." - Jeanette in Tulsa, OK |
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10-10-2007, 08:08 PM
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| That's what we said, Erin. Why is it wrong, 1q2w3e? |
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10-10-2007, 09:37 PM
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| i really dont understand your explanations maybe you didnt understand or i didnt state the problem correctly... You DONT know which is the truthfull guy and which one isnt :P think about it and see that with your answer you still dont know which street to take so u get to point A ... discuss.. |
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10-10-2007, 09:42 PM
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| If you're really clever, you can actually solve this without asking the twins any questions at all. 
__________________ Steve Pavlina www.StevePavlina.com (Twitter page, Facebook page) Get my new book Personal Development for Smart People (now available at Amazon.com) |
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10-11-2007, 08:09 AM
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| So I get to ask both of them one question, or do I ask one question to both of them? As in like, I ask A something, then B something, or do I ask A and B something?
__________________ "Americans are getting stronger. Twenty years ago, it took two people to carry ten dollars' worth of groceries. Today, a five year old can do it." - Henry Youngman |
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10-11-2007, 08:12 AM
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| Oh, nevermind, just walk past them up the street. AMIRITE?
__________________ "Americans are getting stronger. Twenty years ago, it took two people to carry ten dollars' worth of groceries. Today, a five year old can do it." - Henry Youngman |
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10-11-2007, 11:29 AM
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In this case, IT DOESN'T MATTER which one is the truthful guy. Just ask one of the guys (it doesn't matter which one) what the other guy would have told you if you asked him (the other guy) for the right direction to get to A. Then you know that the correct way to get to A is the other direction (not what the guy told you, the other one). Very simple if you have only two possible ways. |
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10-11-2007, 02:26 PM
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No matter which one answers, the answer will point in the right direction. That's similiar to what Rose, Erin and myself have pretty much said beforehand. Last edited by seeker5 : 10-11-2007 at 02:28 PM. |
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10-11-2007, 02:42 PM
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No one else knows, only the twins. So I could say something like, "Walk with me this way if the other twin would say I was going in the wrong direction." ie use a command form of the above questions. But that doesn't seem like it would be your solution Steve. Now how are you going to let me in on the answer without spoiling it for everyone. How about a reply that says **** WARNING Solution Below...? |
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10-11-2007, 02:46 PM
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| This is making the assumption that the two points are in opposite directions relative to where the twins are. The question simply be to ask either one: "What would your brother say is the direction to go to Point A?" If the question was asked to Brother A (truthful), his reply would be: My brother would point to direction B, since he would say the exact opposite. If the question was asked to Brother B (liar), his reply would be: My brother would point to direction B, since his brother would actually point to Direction A, however because Brother B is a liar, he would flip his brother's answer to direction B anyway. And then what you would do is simply thank them and go in the opposite direction of where either one of them would point. Apparently, I've heard these are the types of questions Microsoft asks on their interviews... 
__________________ No Nonsense. Last edited by babuji : 10-11-2007 at 02:50 PM. |
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10-13-2007, 12:16 AM
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| For those who have solved the above problem: The advanced problem: "You have three people, one of them tells always the truth, one lies always and the third does lie sometimes and does tell the truth at other times. You may ask two questions to find the right way".
__________________ I am always open for feedback on my posts. That might focused on the argument at hand or on my writing style. If your feedback would go offtopic feel free to send me a Personal Message. I don't believe in Beliefs. Nassim Nicholas Taleb |
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10-13-2007, 12:30 AM
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| That reminds me of the oldest test: You are interviewing three women to be your secretary. One is brilliantly intelligent, one is charming and attractive, and the third has incriminating photos of you and a monkey. Which one do you hire? |
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10-13-2007, 07:23 AM
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10-13-2007, 03:34 PM
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__________________ Steve Pavlina www.StevePavlina.com (Twitter page, Facebook page) Get my new book Personal Development for Smart People (now available at Amazon.com) |
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10-13-2007, 03:41 PM
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10-13-2007, 05:33 PM
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