Question 16
Five suspects are questioned; exactly one of them is guilty. Each makes one statement, and exactly three of the five statements are true.
Uncle Jack: Uncle Jim committed the murder.
Aunt Mary: I did not do it.
Cousin Stewart: It was not Cousin Margaret.
Uncle Jim: Uncle Jack is lying when he says I did it.
Cousin Margaret: Aunt Mary is telling the truth.
Who committed the murder?

Uncle Jack: Uncle Jim committed the murder.
Aunt Mary: I did not do it.
Cousin Stewart: It was not Cousin Margaret.
Uncle Jim: Uncle Jack is lying when he says I did it.
Cousin Margaret: Aunt Mary is telling the truth.
Who committed the murder?
