I bought you ten yuan for 50 yuan five times, and the rest was 40+30+20+ 10+0. First of all, I think this is a logical problem, but it must be explained by mathematics. The money spent and the rest are mutual. Where is the rest that hasn't been spent? But what is spent and what is left are always two extremes. Like men and women, they are all human beings, but men can never be real women.

I use positive numbers here to represent the money spent, and the rest are represented by negative numbers. For example, the first one spent 20, then 20 is the money spent, and the remaining 30 is the remaining money. According to this logic, the conclusion is that the money spent is more than the remaining money or the remaining money is more than the money spent!

(20-30)+(1 5-15)+(9-6)+(6-0) =-1The last number is negative, so the remaining money is more than the money spent1yuan.

On the other hand, if the money spent is represented by negative numbers and the rest is represented by positive numbers, then

(-20+30)+(-1 5+15)+(-9+6)+(-6+0) =1yuan, so the money left is more than the money spent. Do you think so?