A Difficult Question
Four girls go to school every day by taxi. One day one of the girls said, "There is a test this morning, let's get to school late. Then we will not have to take the test." "What can we say to the teacher?" One of the girls said. "He'll be angry. We'll need a good reason." The girl thought for several minutes, then one of them said, "Let's tell him that our taxi had a flat tyre." "That's a good idea," the other girl said. "We'll tell him that." They reached school an hour later. The test was already finished." Why are you late?" The teacher asked. "You missed the test." "Our taxi had a flat tyre." One of the girls said. The teacher thought for a moment, then he says, "Sit down." The girls do this.
Then the teacher says, "Write on a piece of paper the answer to this question: Which tyre is flat?" What a difficult question! The girls look at each other sadly. At last they give the different answers.