1. THE MEN IN THE HOTEL
Two businessmen, Mr. Smith and Mr. Jones, are booked into the same hotel for the night and given adjacent rooms on the third floor. During the night, Mr. Smith sleeps soundly. However, despite being very tired, Mr. Jones cannot fall asleep. He eventually phones Mr. Smith and falls asleep immediately after hanging up. Why should this be so?
2. A PECULIAR HOUSE
Mrs. Jones wanted a new house. She very much liked to see the sun shining into a room, so she instructed the builders to construct a house in which all four walls face south. After much thought, the builder managed to erect just such a house. How did he do it?
3. THE MAN IN THE HOUSE
A man entered a house. There was no one else in the house. He walked into a room, stopped, and then slowly raised his hands above his head. After a moment, he turned around, let out a laugh, and left. Why?
4. A CHESS PIECE
Two grandmasters played five games of chess. Each won the same number of games and lost the same number of games. There were no draws in any of the games. How could this be so?
5. THE UNSEEN WALKER
On a busy Friday afternoon, a man walked several miles across London from Westminister to Knightsbridge without seeing anybody or being seen by anybody. The day was clear and bright. He had perfect eyesight and he looked where he was going. He did not travel by any method of transport other than by foot. London was thronged with people, yet not one of them saw him. How?
