Good-for-nothing Prosecutor
Logic
Level
2
Three men X, Y, and Z were tried for breaking and entering. It is known that the prosecuting attorney either always lies or always tell the truth. He made the following statements in court:
(1) X is not guilty.
(2) Either Y or Z are guilty.
(3) Z is guilty.
If there can only be one person who is guilty, can you determine who is definitely not guilty?
by
Chung Kevin