Alan, Barry and Carl (each either a Knight or a Liar) were rounded up by the cops yesterday, because one of them was suspected of having stolen money from the bank. The three brothers made the following statements under very intensive questioning:

Alan: I'm innocent.

Barry: I'm innocent.

Carl: Barry is the guilty one.

If only one of these men is a Knight, who stole the money?

you know that since carl and alan contridict each other, one has to be telling the truth and one is lying. if carl is telling the truth, then so is alan, so it cant be him. that means that alan is also lying, meaning that he is the guilty one.

Posted by Jonathan on 2003-03-19 06:14:08