How many letters are there in the alphabet?
Why is it so easy to weigh fish?
Which vehicle is spelled the same forwards and backwards?
What is made of wood, but can’t be sawed?
What is higher without the head, than with it?
What has a ring, but no finger?
Why is the longest human nose on record only eleven inches long?
How can you place a pencil on the floor so that no one can jump over it?
What can never be put in a saucepan?
What house can fly?