Answer:
What tree that definitely grows does not have a shadow and does not grow fruit?
The man who invented it doesn't want it. The man who bought it doesn't need it. The man who needs it doesn't know it. What is it?
What turns from red to black as soon as it touches water?
Double my number, I'm less than a score. Half of my number is less than four. Add one to my double when bakers are near. Days of the week are still greater, I fear.
A nut cracker up in a tree.
When is it bad luck to see a black cat?