Funny Riddles

Question: Little Johnny is walking home. He has $300 he has to bring home to his mom. While he is walking a man stops him and gives him a chance to double his money. The man says "I'll give you $600 if you can roll 1 die and get a 4 or above, you can roll 2 dice and get a 5 or 6 on at least one of them, or you can roll 3 dice and get a 6 on at least on die. If you don't I get your $300."

What does Johnny do to have the best chance of getting home with the money?

Question: A man shaves several times a day, yet he still has a beard.

Who is this man?

Question: If a white house is white and a yellow house is yellow, what color is a green house?

Question: I have all of your knowledge but could fit in your hands.

What am I?

Question: You are my brother, but I am not your brother. Who am I?