On the first day of the school a young girl was found murdered.
Police suspect four male teachers and question them.
They were asked what they were doing at 8:00 am.
- Mr. Walter: I was driving to school and I was late.
- Mr. Thomas: I was checking English exam papers.
- Mr. Benjamin: I was reading the newspaper.
- Mr. Calvin: I was with my wife in my office.
The police arrested the killer.
How did the police find the murderer?
Answer:
Mr.Thomas as he cannot be checking exam papers on the first day of school.