Tyred and Tested

Two guys were studying chemistry at university. They were so confident going into the final exam that two days before, they decided to travel to the city and go to a party with some friends. However, they overslept and didn’t make it back to the campus in time to write their exam.

They found their professor to explain why they missed the final. Their excuse was that they had gone up to the city and had planned to come back in time to study, but that they had a flat tyre on the way back. They didn’t have a spare tyre, and couldn’t get help for a long time, so they were late in getting back. The professor told them they could make up the final the next day.

The relieved students studied that night and went in the next day for the exam. The professor placed them in separate rooms, and handed each of them a test booklet and told them to begin. They looked at the first problem, which was worth 5 points. It was something simple. This is

going to be easy, they thought. They did that problem and then turned the page. Question No. 2 said: “Which tyre?” (95 points).