One night, these four students were partying late night and did not study for the test which was scheduled the next day. In the next morning, they have thought of a plan. They applied grease and dirt all over their body. Then they went to the Dean and said they had gone out to a wedding last night and on their way back the tire of their car burst and they had to push the car all the way back. So they were in no condition to take the test. The Dean thought for a minute and said they can have the re-test after 3 days. They thanked him and said they will be ready by that time. The Dean thought for a minute and said they can have the re-test after 3 days. They thanked him and said they will be ready by that time. The test only had two questions and each question was 50 points each. But there was a special condition, each student had to sit in a different classroom. The first question asked their name and the second question asked which car tire was burst (front left, back left, front right or back right). With this second question all of the students failed the exam. (You might need to think to understand why).