The more of this there is, the less you see. What is it?
I have branches, but no fruit, trunk or leaves. What am I?
A man dies of old age on his 25 birthday. How is this possible?
You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?
You see a boat filled with people, yet there isn’t a single person on board. How is that possible?
A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?
What goes up but never comes down?
What is always in front of you but can’t be seen?
What question can you never answer yes to?
What month of the year has 28 days?
In the 1920s, people feared that crossword puzzles would contribute to illiteracy.