Professor Z was killed by one of his four students, who was helped by another of the four. His students declared:

A: If B is guilty of something, then C must be innocent.
B: If A is innocent, then C must be guilty.
C: If B was the killer, then D must have had nothing to do with the crime.
D: I am innocent.

As everybody should know, guilty parties always lie, and innocent people always tell the truth. Who killed the professor, and who was his accomplice?

actually a and b are the innocent ones.

a said that if b is guilty then c is innocent, but b is innocent therefore c is not innocent.

b said if a is innocent then c is guilty which means just as it says.

c says if b was the killer d had nothing to do with it but b is innocent so d had something to do with it

and d just lied

so the answer is a and b had nothing to do with it c was the murderer and d was the accomplice

Posted by paul on 2004-03-08 21:32:45