Riddle: In order to figure out what is in a sealed box, you perform some tests. The box seems heavy for its size and is harder to remove from a steel table than when placed on a concrete floor. What kind of object could be inside the box?"
Answer: The answer is magnet because it would be really hard to move a magnet across a steel table since it would attract to the steel-not making it able to move.
Riddle: A man is found murdered on a Sunday morning. His wife calls the police, who question the wife and the staff, and are given the following alibis: the wife says she was sleeping, the butler was cleaning the closet, the gardener was picking vegetables, the maid was getting the mail, and the cook was preparing breakfast. Immediately, the police arrest the murderer. Who did it and how did the police know?