An Indian mathematician and Einstein are on a plane and decide to have a competition to pass the time. Einstein says, if I ask you a question, and you can’t answer it you give me five dollars. If you ask me something and I can’t answer it I give you five hundred dollars. # The Indian agrees, he says to Einstein to go first, Einstein said to the man, how far from the ground to the moon? # The Indian can’t answer it so he gives Einstein five dollars, he then asks Einstein what goes up a hill and has three legs, but comes down the hill with four legs? # Einstein can’t answer it so he gives the Indian five hundred dollars, he then asks the Indian, what does have three legs going up a mountain but four coming down # The Indian hands him five dollars.