I need help on a riddle

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mike69

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okay.........here's the scenario.......

you have two computers, you know one tells a lie and the other tells the truth, but you don't know which.......you have two doors......one door is the door you want to get into , which is the path to success, the other door is not......if you can only ask the computers one question, to find out which door is the one you want .........what would it be......
 
you ask the first how much 2+2 is , you then find out if he is a liar or the thruth machine , you then use the second one to answer your question accordingly
 
from what the guy told me, you can only ask ONE question and one question only.......you can't ask one for each computer separately.........
 
Ask them : What question would I have to ask you to get the answer : Door 1 is the path to success.
 
ask them both, If you were the other computer, which door would you say is the path to success?

The computer who always tells the truth would know that the other computer always tells lies. So the truth computer would tell you to go to the door which the computer who lies would tell u. which is the wrong door.

The computer who lies is supposed to to tell you the answer the computer who tells the truth would say, which is the right door. But since this computer lies, it would tell you to go to the wrong door.

SO since they would both tell you to go to the same door, which is the wrong door. You would go to the other door. I hope that made sense.
 
Ouch my brain hurts.... :34:

Kage_
 
hm.....i'm sorta getting what you're saying spoofee coupon.....but, Well, that's still asking two questions.....instead of one question total.......

because you're asking one question to one computer, and one question to the other computer.......

also, this might be just me, but i don't get how both computers are pointing to the same door.....are you making an assume which computer you think is the truth one and which on is the lie one initially before asking that question?
 
OH .. i thought u said you can ask them both one question. Sorry.

And.. it doesn't matter which computer is the truth one and which is the lying one. Because they will both point to the same door. Its hard to communicate it through typing. And maybe also because i'm not the best at explaining things. Maybe if I had visuals and a graph. yeah.. .a graph..
 
U cant do it with 1 question , you need 2 its mathatemically impossible with 1
 
Btw spoofee coupons that was an amazing question , that is the answer to the riddle , im sure u can ask 1 question to bith and spoofee coupons go it
 
darn, okay, i guess i was thinking it in the wrong way.....i kept thinking about labeling the doors, or figuring out which computer is which..........and since you're asking two computers, you would have four different combinations that they could possibly say....

like......

one computer can say door 1, and the other computer says door 1,
one computer can say door 1, and the other computer says door 2,
one computer can say door 2, and the other computer says door 1,
one computer can say door 2, and the other computer says door 2,

but i guess the way you say it, it doesn't have to........

but then again, what are the chances that they will both point to the same door? why wouldn't you say that the "truth" comp points to door number 1 and the "lie" comp points to the door that the truth comp doesn't point to , being door number 2 ?
 
its not taking chances. The way you are asking the question, they will both point to the door you should not go into. And we are assuming that both computers know which door is which and they also know which computer is they liar and which is honest. C1 = Honest computer, C2 = Lying computer. if you ask C1 which door C2 will say is the correct door, C1 knows that C2 does not tell the truth. And C1 will honestly tell you that C2 will say to go through the wrong door.

And if you ask C2, C2 will know that C1 will tell the truth and tell you to go through the Right door. HOWEVER, C2 lies. So C2 will tell you to go the opposite of the door that it thinks C1 will say. So since C1 would say to go through the correct door, C2 will tell you the opposite of what it thinks C1 will say, and tell u that C1 will say to go to the wrong door.

SO now they are both pointing to the wrong door. The door you should not go into. And you can go through the correct door.
 
Spoofee-Coupons is correct. This is the riddle that was asked to me when I was in younger years :)
 
thank you so much! You're so SMART!! :o

man, these riddles can be addictive in a bad way, once it's in your head, you feel forced to find out the answer or else i'll drive you nuts
 
dehawk666 said:
you ask the first how much 2+2 is , you then find out if he is a liar or the thruth machine , you then use the second one to answer your question accordingly
Click to expand...

if u negate the same Q, it will work.

Ask any 1 of the comps, Is 2+2 is 5 ?
 
Ask any 1 of the comps, Is 2+2 is 5 ?
Click to expand...

thats already one question right? then you cant ask again what door to choose.

Spoofee-Coupons sounds good.
 
O_loung1 said:
thats already one question right? then you cant ask again what door to choose.

Spoofee-Coupons sounds good.
Click to expand...

you dont have to ask the second Q ! U need only 1 Q. apply the same spoofee-coupons logic (which is actually better).
 
Spoofee-Coupons said:
its not taking chances. The way you are asking the question, they will both point to the door you should not go into. And we are assuming that both computers know which door is which and they also know which computer is they liar and which is honest. C1 = Honest computer, C2 = Lying computer. if you ask C1 which door C2 will say is the correct door, C1 knows that C2 does not tell the truth. And C1 will honestly tell you that C2 will say to go through the wrong door.

And if you ask C2, C2 will know that C1 will tell the truth and tell you to go through the Right door. HOWEVER, C2 lies. So C2 will tell you to go the opposite of the door that it thinks C1 will say. So since C1 would say to go through the correct door, C2 will tell you the opposite of what it thinks C1 will say, and tell u that C1 will say to go to the wrong door.

SO now they are both pointing to the wrong door. The door you should not go into. And you can go through the correct door.
Click to expand...

That only works if you place assumptions upon the computers to think what the other one is thinking.

ANother question I have...
Can both computers answer 1 question? or can you only ask 1 and only receive 1 answer from the computer you ask?
 
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yes we would have to assume that they know what the other computer is thinking. We would have to also assume that the computers know which door is the right door. They could just be two computers with minesweeper on them for all we know. But for this purpose.. i think we are going to let go of some of the obvious what ifs.
 
hmm using your logic doesnt both computers have to answer you.
 
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