Bill said to Jim: "Let's gamble on the ten games, a game is once. Every game is half the money in your wallet. I know that your wallet is only 8 yuan now, then our first game I only gambling 4 yuan. If you win, I will give you 4 yuan; but if I won, you have to give me 4 yuan. In this case, I have arrived at the second game, you may have 12 Block money or only 4 yuan left, so we can gamble 6 yuan or 2 yuan. Other bureaus also pushed. "
They played a 10 game before and after. Bill won the four games, lost six games, but Jim was surprised to find that only 5.70 yuan left in his pocket, that is, he won the two games, but it lost 2.30 yuan. How did that happen?
