Question

Magic Box: A businessman had some gold coins. One day, a magician came to him and said, I have a magic box. If you put gold coins in it, it doubles the next day! The businessman's eyes lighted up and he somehow wanted to get the box. But the magician had a condition. In return for loaning you the box, you have to give me 8 coins every time after it doubles, as my commission. The businessman agreed to the condition. When he put his coins in the box, just as the magician had predicted, it doubled the next day. He gave the magician his share of 8 coins. He did the second and third days too, but at the end of the third day, he had no coins left! How many gold coins did the businessman have on the first day?

Answer 1

Answer:

the businessman have 512 gold coins on the first day