Jump to content
BrainDen.com - Brain Teasers
  • 0
Guest

The Murderer

Question

Guest

I heard this one a long time ago.

A man aproaches you in a dark alley. He says,

"If you tell a lie, I will kill you with a knife. If you tell the truth, I will kill you with a gun."

What do you say to stay alive?

Share this post


Link to post
Share on other sites

Recommended Posts

  • 1
Guest

Say: You will kill me with a knife.

Cause if it's true it can't be because then it will become false. On the other hand, it can't be false cause than he will kill him with a knife making it true.

Share this post


Link to post
Share on other sites
  • 0
I heard this one a long time ago. :mellow:

A man aproaches you in a dark alley. He says,

"If you tell a lie, I will kill you with a knife. If you tell the truth, I will kill you with a gun."

What do you say to stay alive?

This has been posted in a slightly different form elsewhere in this forum.

The usual answer is

make a statement that is true if he uses a knife and false if he uses a gun.

Several ways to construct such a statement. e.g. You will kill me with a knife, but you won't kill me with a gun.

A much easier solution is

Recognize that only declarative statements have a truth value.

Don't make a declarative statement; that way it won't be the truth or a lie.

Here are three possibilities:

[1] Remain silent. - or if you must say something, ask a question

[2] Why do you want to kill me? - or exclaim something:

[3] No! Please do not kill me!

Share this post


Link to post
Share on other sites
  • 0
Guest
I heard this one a long time ago. :mellow:

A man aproaches you in a dark alley. He says,

"If you tell a lie, I will kill you with a knife. If you tell the truth, I will kill you with a gun."

What do you say to stay alive?

The simplest answer I have found was

"You will kill me with a knife." Any paradox, actually, should leave you alive.

Share this post


Link to post
Share on other sites
  • 0
Guest

I would answer with another paradox which is:

"I always lie and never tell the truth"

This statement cannot be a lie or the truth.

If you do always lie, then you cannot make that statement - because it is the truth.

If you dont lie, then you cannot make that statement - beause the statement is a lie.

Yes that's what I'd say.

Share this post


Link to post
Share on other sites
  • 0

i like writersblock's answer but if you are in a dark alley wont it be hard for him to aim at you with a gun? it wouldnt matter what you said as long as he tried to use a gun and you ran away

Share this post


Link to post
Share on other sites
  • 0
Guest

"I have AIDS"

make him think twice about stabbing you... unless you really do have aids in which case he could shoot you from a safe distance

it's wrong, i know but give me a little credit

Share this post


Link to post
Share on other sites
  • 0
Guest

why not just say"i wiegh 80 pounds" or "Why???" the 80 pound one he will have no way of telling if it is a lie or the truth

Share this post


Link to post
Share on other sites
  • 0
Guest

Of course the knife statement is the official answer but...

he doesn't say when he will kill you... and he doesn't say he won't kill you if you remain silent. Perhaps it would be best to say the truth and a lie before he has a chance to kill you. Then he HAS to kill you with a knife and a gun which should at least be hard.

Would you say such a paradox is both TRUE and FALSE, neither TRUE nor FALSE, or something else?

Edited by redshift

Share this post


Link to post
Share on other sites
  • 0
Guest

Well I've been mugged at gun point and I didn't get to mum a word. :huh:

I don't think in this scenario there'll be any difference.

Share this post


Link to post
Share on other sites
  • 0
Guest

I'm thinking if you rely on a paradox to get you out of this, he might just get annoyed and kill you with a nuclear bomb instead. You could get out of the situation non-paradoxically like this:

"If you kill me with the gun, you will stand absolutely still for 5 minutes before you shoot me"

He can't kill you with the knife because your statement would be true in that case. But in order to kill you with the gun, he has to stand still first to make the statement true (at this point you run). Of course he might have been lying from the start and just laugh and shoot you in the head.

Share this post


Link to post
Share on other sites
  • 0
Guest

You say that he will kill you with a knife. So he can not kill you with a knife because it will be true and should therefore kill you with a gun. However if he then kills you with a gun your statement will be false so he should kill you with the gun and so on...

Share this post


Link to post
Share on other sites
  • 0
Guest
I'm thinking if you rely on a paradox to get you out of this, he might just get annoyed and kill you with a nuclear bomb instead. You could get out of the situation non-paradoxically like this:

"If you kill me with the gun, you will stand absolutely still for 5 minutes before you shoot me"

He can't kill you with the knife because your statement would be true in that case. But in order to kill you with the gun, he has to stand still first to make the statement true (at this point you run). Of course he might have been lying from the start and just laugh and shoot you in the head.

If he killed you with the knife the statement would be false wouldn't it? So he could kill you with the knife. :mellow:

Share this post


Link to post
Share on other sites
  • 0
Guest

just simply say nothin or if u hav to say somethin then say somethin no one say its true or not

Share this post


Link to post
Share on other sites
  • 0
Guest

My Way, Say "Can i Have the gun?", By asking a qestion your not telling a lie or a truth. this one is flawed on the assumption that you A) Must say something and B) Make a statment

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Answer this question...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...

  • Recently Browsing   0 members

    No registered users viewing this page.

×
×
  • Create New...