Riddle: At the beginning of the year at a school there was a murder There are 4 suspects the principal, the gardener, the coach and the math teacher. The principal said he was at his office, the math teacher said he was doing his mid season test, the gardener said he was chopping the grass and the coach said he was organizing the sport hall. Who's the murderer?
Answer: The murderer was the math teacher because he said he was doing his mid season test but it was the beginning of the year.