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This one weird trick will get you infinite gold - Dan Finkel
Mar 28 2023
A strange little man with a magical bag has challenged you to guess how many gold coins he is holding. The bag increases the number of gold coins placed inside it in a special way, such that if any number of coins are placed inside and then the resulting coins are placed inside the bag again, the total number of coins that come out will be three times the original amount. The man has already placed 13 coins inside the bag and removed the contents once. He asks you to tell him how many coins he is holding, otherwise he will claim your first-born child as payment for his services. Can you figure out the answer and save your child?
