Joke: One really hard question

The admissions interviewer at the school said, "I shall ask you either ten
easy questions or just one really difficult question. Think well before you
make up your mind!"

The boy thought for a while and said, "My choice is one really difficult
question."

"Well, good luck to you. You have made your own choice! Now tell me this:
What comes first, day or night?"

The boy was jolted into reality as his admission depended on the correctness
of his answer, but he thought for a while and said, "It's the day, sir!"

"How did you determine that?" the interviewer asked.

"Sorry, sir. You promised me that you would ask me only one difficult
question!"