Question: A king is on a cross-sea voyage and as soon as they get off of their boats he spots the most beautiful elephant he has ever seen. He decides to take it home, but first, he wants to know its weight.
The largest scale they brought only goes up to 50 pounds. The king demands that his smartest scholar must come up with a solution or pay the consequences. After several days he finally comes up with an answer.
Answer: Put the elephant in a boat and mark how far down in the water the boat went. Then put a bunch of smaller objects (that weigh less than 50 pounds) in the boat until it is pushed under water the same amount. Add up the weight of all of the small objects and that's the weight of the elephant.