Two college seniors had a week of exams coming up. They decided to party instead. Their biggest exam was on Wednesday and they showed up telling the professor that their carhad broken down the night before due to a very flat tire and they needed a bit more time to study. The professor told them that they could have another day to study.
That evening, both of the boys crammed all night until they were sure that they knew just about everything.
Arriving to class the next morning, each boy was told to go to two separate classrooms to take the exam. The two of them looked at each other, shrugged and went to two different parts of the building.
As each sat down, they read the directions: "For 5 points, explain the contents of an atom. For 95 points, tell me WHICH tire it was!"