1. Three mature and hefty women were walking in San Fransico under one regular-sized umbrellea. Why didn't they get wet?
2. What can a pitcher be filled with so that it is lighter than when it is filled with air?
3. What occurs once in a minute, twice in a week, and once in a year?
4. A man traveling in a taxi and is talking to the driver. After a while the driver tells him, " You must excuse me, I am deaf and cannot hear a word that you are saying. The passanger stops talking. After the passanger gets out of the cab, he realizes that the driver had lied to him. How did he know?
Spoiler for Solution