One night 4 college students were partying until late and did not study for a test which was scheduled for the next day. In the morning, they thought of a plan. They made themselves look, with grease and dirt, as dirty as possible.
They then went to the teacher and said that they had gone to a wedding last night and on their return, a tire burst on their car.
Since they had to push the car all the way back home, they were in no condition to take the test. The teacher kindly allowed them to do a re-test after 3 days; they thanked him and said they would be ready by that time.
On the third day, they went for their test. The teacher said that as this was a special condition test, so all four were required to sit in separate classrooms. They all happily agreed, as they had prepared well in the last 3 days.
The test consisted of 1 single question, worth a total of 100 points:
Q. Which tire?
1. Front Left
2. Front Right
3. Back Left
4. Back Right