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OT: Help with a riddle
- Thread starter Flyin' V
- Start date
CheekyJez said:Say to a guard "Would you say that the left hand door is the safe one?"
Cheeky.
I salute you.
symeon said:Cheeky.
I salute you.
3 weeks today, I will have just finished a logic exam. I only hope i pass...
Ravenforce3
New member
A man walks up to you offering you a chance to be named one of the three smartest people in the world. You, of course, agree, and he brings to to a small forest clearing where two other people are tried to their chairs, with their chairs tied to a tree. He offers you a chair, which is also tied to a tree. You sit down and he ties you up as well. You are sitting in one corner of the triangle, so you can see both of the other people and they can see you. Next the man blindfolds all three of you.
"I am going to paint a red or green dot on each of your foreheads. If you see at least one green dot, raise your hand. You must guess which color dot is on your forehead. If you guess right, I will let you go and give you the title of smartest person on earth. If your wrong, I'm not going to untie you."
The man paints a dot on each of your foreheads and takes the blindfolds off. You see a green dot on both peoples' foreheads, so you raise your hand. They see at least one green dot and raise their hands as well.
After a long silence, you say, "Sir, I know which color dot I have."
Which color dot do you have and how do you know?
Hints:
You cannot see any paint, paintbrushes or paintcans
You cannot tell which way the other people are looking.
You cannot see the reflection in thier eyes
You do have the green dot. You are colorblind, therefore, you see red as green.
symeon said:A better statement, I believe, would be something like:
"This statement is false."
That, or something like "I will be fed to lions." That way, if they feed him to lions, it makes the statement true, making it impossible for them to feed him to the lions; if they threw him off the cliff, it would make the statement false, making it impossible for them to throw him off the cliff. Hmm... I don't understand why they couldn't have just stabbed him or something, though.
Rhyme of the Aceint Mariner.Kremtok said:Hmm...I do know that according to Naval tradition, it is considered a grevious offense to kill an albatross. Is this relevant?
Ravenforce3 said:You do have the green dot. You are colorblind, therefore, you see red as green.
But if your colorblind they both APPEAR green but you still don't know.
Howitzer Al
New member
dantose said:1. did they start out in the cabin?
Yes they did.
GooberGrape1
New member
ding, you got it! ok the gloves are off...Cyanide said:That, or something like "I will be fed to lions." That way, if they feed him to lions, it makes the statement true, making it impossible for them to feed him to the lions; if they threw him off the cliff, it would make the statement false, making it impossible for them to throw him off the cliff. Hmm... I don't understand why they couldn't have just stabbed him or something, though.
What is open when it is closed, and closed when it is open?
GG
FrolfFreak
New member
@ GG: Is it the first letter in each word? In "closed" the "c" is an open letter, while in "open" the "o" is a closed letter.
-FF
-FF
CheekyJez said:Say to a guard "Would you say that the left hand door is the safe one?"
Then the effects of his lying are cancelled. If he's a liar then he'd tell you the wrong door, but he'd LIE about telling you the wrong door so give you the right one...
I really don't understand this one. Could you please explain it?
I have a logic exam coming too :thumbsup: , but I'm not very good at it, as you can see.
thank you,
clercqer
clercqer said:I really don't understand this one. Could you please explain it?
I have a logic exam coming too :thumbsup: , but I'm not very good at it, as you can see.
thank you,
clercqer
OK, let's say the guard you ask tells the truth.
Then if you asked him "is this the correct door", he'd tell you the truth.
So when you ask him "If I asked you if this was the correct door, what would you tell me?" he tells the truth about what he'd tell you, i.e. he tells you the truth about the door.
Now suppose he lies.
So if you asked him "is this the correct door" he lies about it. But when you ask him "if I asked you if this was the correct door, what would you tell me?" then he lies about what he would tell you... but what he would tell you was a lie, so he tells you the truth about the door!
CheekyJez said:OK, let's say the guard you ask tells the truth.
Then if you asked him "is this the correct door", he'd tell you the truth.
So when you ask him "If I asked you if this was the correct door, what would you tell me?" he tells the truth about what he'd tell you, i.e. he tells you the truth about the door.
Now suppose he lies.
So if you asked him "is this the correct door" he lies about it. But when you ask him "if I asked you if this was the correct door, what would you tell me?" then he lies about what he would tell you... but what he would tell you was a lie, so he tells you the truth about the door!
But of course!! Thank you very much indeed.
:drink: :buddies:
clercqer
GooberGrape said:What is open when it is closed, and closed when it is open?
A toll booth? If it's closed, it's working; you pay and it opens up for you. If it stays open, it's out of order (and therefore closed)...
A revolving door?
A bridge? You know, the kind that open upwards to let boats through. When it's open, car's can't pass, and when it's closed, the bridge is open...
GooberGrape1
New member
Cyanide said:A toll booth? If it's closed, it's working; you pay and it opens up for you. If it stays open, it's out of order (and therefore closed)...
A revolving door?
A bridge? You know, the kind that open upwards to let boats through. When it's open, car's can't pass, and when it's closed, the bridge is open...
Yes, a drawbridge! Right again!
GG
