Exam

[Seafood]

Four university students partied too hard during a music festival and were unable to make it back for their final exam the next day.

As they drove back to the university, they tried to think of a good excuse. Finally, they agreed to the same story: that a car tyre was blown in the middle of nowhere at midnight so they were stuck.

They each sent the professor an email asking to retake the exam and gave the same excuse.

The understanding professor said it was fine and asked them to take the exam the next day, but for fairness they would have to take a different exam.

The next day they came to the exam room, and as per the usual procedure, each obtained a copy of the exam and sat in a corner.

The classroom was big and empty, the professor sat and watched them, so they were nervous.

Fortunately, the questions on the first page are fairly easy. Even though these questions only worth 10/100 points, it calmed them down a bit.

So they quickly finished the first page at the same time and turned to the second page.

There was a single question on it:

(For 90/100 points)

Which tyre was blown? “