1) There was a building with 100 floors. A short man lived on the very top floor, the 100th floor. On sunny days, he would ride the elevator up to the 70th floor, then climb the stairs up the rest of the way. On rainy days, he would ride the elevator straight to his apartment, the 100th floor. Why?

2) During a visit to a mental asylum, a visitor asked the Director what the criteria is that defines if a patient should be institutionalized. "Well," said the Director, "we fill up a bathtub. Then we offer a teaspoon, a teacup, and a bucket to the patient and ask the patient to empty the bathtub." Okay, here's your test: 1. Would you use the spoon? 2. Would you use the teacup? 3. Would you use the bucket? "Oh, I understand," said the visitor. "A normal person would choose the bucket, as it is larger than the spoon." What was the director's response?

3) A murderer is condemned to death. He has to choose between three rooms. The first is full of raging fires, the second is full of assassins with loaded guns, and the third is full of lions that haven't eaten in 3 years. Which room is safest for him?

4) A man wants to enter an exclusive club, but he doesn't know the password. Another man walks to the door and the doorman says 12, the man says 6, and is let in. Another man walks up and the doorman says 6, the man says 3, and is let in. Thinking he had heard enough, he walks up to the door and the doorman says 10, he says 5, and he isn't let in. What should he have said?

5) A man is trapped in a room. The room has only two possible exits: two doors. Through the first door there is a room constructed from magnifying glass. The blazing hot sun instantly fries anything or anyone that enters. Through the second door there is a fire-breathing dragon. How does the man escape?