At a nearby University, there were four students enrolled in the same class.
They did so well on all the quizzes, midterms and labs, etc., that each had an “A” so far for the semester.
These four friends were so confident, that the weekend before finals, they decided to take a road trip to another college and party with some friends there. They had a great time. However, after all the hard partying, they slept all day Sunday and didn’t make it back to their school until early Monday morning.
Rather than taking the final then, they decided to find their professor after the test and explain to him why they missed it.
They explained that they had gone to the other school for the weekend with the plan to return Sunday to study, but unfortunately, they had a flat tire on the way back, didn’t have a spare, and couldn’t get help for a long time. As a result, they missed the final.
The Professor thought it over and then agreed they could make up the final the following day. The guys were elated and relieved. They studied all night and went in the next day, fully prepared, at the time the professor specified.
He placed the 4 in separate rooms, handed each of the students a test booklet and told them to begin.
They looked at the first problem, worth 5 points. It was something simple. “Cool”, they all thought, “this is going to be easy.”
Each finished the problem and then turned the page. On the second page was written: For 95 points: Which tire?