Twenty frogs are sitting on a log floating on the surface of a river. Two of them decide to jump off into the water.

How many frogs are there on the log at this moment?

What animal walks on four legs in the morning, two legs during the day, and three legs in the evening?

Oedipus, the king of Thebes, figured out the answer to the riddle:

I can turn polar bears white.
I can make anyone dance.
I can make everyone cry
I can make your hands clap
I can make you thin.
I can make you smile.
I can make you smile

Can you guess the riddle?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see? What is it?

What can jump higher than a building?

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

Can you find a number that lies one third of the distance between 1/3 and 2/3?

What do you get if you add 2 to 100 four times?

John has eleven friends. He has a bowl containing eleven apples. Now He wants to divide the eleven apples among his friends, in such a way that an apple should remain in his bowl.
How can He do it?

Can you make four (4) nines (9) equal 100?