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The hardest riddle ever....
PostPosted: Mon Dec 13, 2004 9:48 pm
by Beast
Ok, there are three friends and you, each have hats, two have white hats, other two have black hats.
There is a wall in the middle of the room where the four dudes are! On one side of the wall, theres three of the dudes, all lined up single file facing the wall. And the other side one dude facing the wall also.
The point is for you and your friends to figure out what color hat they have on, you need to figure out the color of your hat!
Any of your friends can answer if they figure it out.
Your the person in the middle of the three dudes, and the person's hat in front of you is white!
You can't talk, look around, or move! The only point is to figure your hat color, if you guess wrong, well then........
Ask questions if confused.
PostPosted: Tue Dec 14, 2004 4:39 am
by Mr. SmartyPants
just look, the wall is reflective??? so you'd automatically know
or
you gave the hats out, so you knew from the beginning?
PostPosted: Tue Dec 14, 2004 5:07 am
by Raptor
I ask the guy at my left whats his hat color using sign language.
PostPosted: Tue Dec 14, 2004 6:05 am
by termyt
I believe using sign language would violate the "no move" rule, and how would you see his response?
I know the answer, but I don't want to give it away to anyone trying to figure it out. I'll give a hint though, if you want to see it:
[spoiler]You should know the color of your own hat after about 30 seconds of waiting[/spoiler]
PostPosted: Tue Dec 14, 2004 6:28 am
by harina
This sounds hard...
Is whistling, singing etc. allowed?
PostPosted: Tue Dec 14, 2004 7:09 am
by Chichiri
what if that wall was one of those police see through walls? that'd be easy then.
PostPosted: Tue Dec 14, 2004 7:29 am
by uc pseudonym
Ah; another permutation of this problem.
It seems that everyone, excepting termyt, I believe, is looking at this problem in the wrong way. The point is not to find a clever way to circumvent the rules, but to logically solve the situation (which is possible). For the purposes of the riddle, it is impossible for you to see anything other than the person directly across from you or to communicate with them in any way (excepting the other people, if they figure out the color of their hat).
PostPosted: Tue Dec 14, 2004 9:03 am
by Sam*ron
No, see through walls guys, and you can't see anyone on your left!
Only the person in front of you, and behind you which you can't see.
No moving, UC and termyt are a great help, listen to them. ^^
PostPosted: Tue Dec 14, 2004 9:17 am
by skynes
I think I know it, I PMed Beast with my suggestion on the answer and reasons why I think its that.
PostPosted: Tue Dec 14, 2004 11:57 am
by Danyasaur
I think know the answer, but I'm not gonna' say, I wanna see somone else get it lol
PostPosted: Tue Dec 14, 2004 12:14 pm
by Cap'n Nick
My logic professor gave us a problem similar to this one. He also tried to convert us all to atheism. That was a weird class.
Oh, and just to be insufferably pedantic and prove that I know the answer:
[spoiler]The silence of the man behind me speaks volumes.[/spoiler]
PostPosted: Tue Dec 14, 2004 12:58 pm
by John316
I got this one on a Microsoft interview once, actually got it right too
Cap'n Crack's got it.
Another hint:
[spoiler]
The guy in the back stuck behind the wall can't see anything, and no one can see him. He's has no effect, just a red herring.
[/spoiler]
PostPosted: Tue Dec 14, 2004 1:24 pm
by ZiP
Hey Beast, can you define "single file" please?
PostPosted: Tue Dec 14, 2004 1:28 pm
by uc pseudonym
ZiP wrote:Hey Beast, can you define "single file" please?
View the attachment. It was stated in a confusing manner. Initially I thought they were all equal distances from the wall, in three seperate, one-person lines, which made the problem considerably trickier.
PostPosted: Tue Dec 14, 2004 1:38 pm
by Kaligraphic
Okay, I have the answer. Hmm, should I post it now, or wait so more people can figure it out?
[spoiler]It's not a plaid hat.
You expected the answer, didn't you?[/spoiler]
PostPosted: Tue Dec 14, 2004 1:50 pm
by ZiP
Thanks UC.
"Any of your friends can answer if they figure it out. "
By friends do you mean the people in the room with you Beast?
PostPosted: Tue Dec 14, 2004 2:37 pm
by Felix
Ok, I'm pretty sure that I know it now, but I'm gonna wait and see if some others can get it.
PostPosted: Tue Dec 14, 2004 2:52 pm
by Kaligraphic
"Any of your friends can answer if they figure it out."
"your friends" == the other people in the riddle
PostPosted: Tue Dec 14, 2004 3:23 pm
by Sephiroth
Heh heh, thats a really good one, here is my answer:
[SPOILER]You are wearing a black hat. You know this because the person in front of you is wearing a white hat, and you know that if you were wearing a white hat too the person behind you would have already shouted out his colour of hat as black, and theres only 2 colours of hat[/SPOILER]
PostPosted: Tue Dec 14, 2004 3:48 pm
by Riku777
oooohhh.... brain hurts... @_@ *waddles away*
PostPosted: Tue Dec 14, 2004 3:51 pm
by Kinkosami
You guys are doing pretty good with this. Everybody has already answered everybody else's questions, so I'm hoping everyone understands the problem now? Kudos to those who have already gotten the answer, you guys are smart. I can't remember if I ever figured this out, or if my brother had to tell me...
I'm assuming that you already know the answer, UC? You haven't stated that you have yet, but I'm assuming...
PostPosted: Wed Dec 15, 2004 5:07 am
by termyt
Kaligraphic wrote:[spoiler]
You expected the answer, didn't you?[/spoiler]
[spoiler]From anyone but you, perhaps. ]
PostPosted: Wed Dec 15, 2004 5:32 am
by uc pseudonym
Kinkosami wrote:I'm assuming that you already know the answer, UC? You haven't stated that you have yet, but I'm assuming...
I do. Once I had the proper setup of persons in mind, I thought it was actually easy. Prior to understanding that, I'll admit I was fairly puzzled. Meanwhile, my thoughts:
[spoiler=riddle's answer]Actually, if the person on the other side of the wall tells you their hat is black, your hat will be plaid.[/spoiler]
PostPosted: Wed Dec 15, 2004 6:23 am
by skynes
Turns out my guess was correct and my reasoning was spot on.
[spoiler]What gave it away to me was the line of
"Any of the dudes may give the answer if they know their hat"
[/spoiler]
PostPosted: Wed Dec 15, 2004 10:06 am
by Sam*ron
Good job all of you! ^^
PostPosted: Wed Dec 15, 2004 10:59 am
by harina
It took me a while to understand the riddle... and also a while to understand the answer.. <____<;; (partly because of my not-so-good English knowledge)
But now i got it. I'm gonna tell it to my friend who loves riddles.
PostPosted: Wed Dec 15, 2004 4:25 pm
by Beast
Thank you all for posting on this trhead, you are all very smart!
Any of you can post the answer if you wan't now.
PostPosted: Wed Dec 15, 2004 5:49 pm
by Sephiroth
O.K.
[spoiler=answer]You are wearing a black hat. You know this because the person in front of you is wearing a white hat, and you know that if you were wearing a white hat too the person behind you would have already shouted out his colour of hat as black, and theres only 2 colours of hat[/spoiler]
<note: I created a spoiler in your post, just in case some one who truly wishes to discover the answer for themselves reads it.>
PostPosted: Wed Dec 15, 2004 6:17 pm
by Felix
Yay for me!
I got it right. It took me a while to understand the question, but it was actually fairly easy.
PostPosted: Wed Dec 15, 2004 7:17 pm
by Beast
Yes, you are right! Good Job!
It's cool becuase once you figure
it out, it seems fairly easy.