Solution: Arnold took 100 yuan from country A and shopped at country A's shopping mall 10 yuan. When the other party was looking for money, he claimed to go to country B and asked to get his money back from country B. In this way, he should have used 90 yuan to get his money back from country A, but he got 100 yuan from country B. At this time, he added/kloc from the king.

Arnold took 200 yuan's money from country B and quickly ran to the store in country B to ask for goods from 20 yuan. When the other party was looking for money, he claimed to go to country A and asked for country A's banknotes ... In this way, he should have found 180 yuan (90 yuan× 2) in country B's banknotes, but he got country A's banknotes from 200 yuan.

In this way, he shopped in country A and asked for money from country B; Shopping in country B and getting the money back from country A will accumulate more and more money in his hand, and before long, he will be rich.

You say, why is this?

Solution: the stingy rich man took 300 thousand a month. The total amount he needs to pay the other party is:

1+2+4+8+ 16+32+5368709 12

= 107374 1823 (minutes) = 107374 18.23 (yuan). That is, 107374 18 yuan scored 23 points.