First of all, let me tell you that this is not psychological mathematics, it is just simple algebra. Writing this kind of algebra is very simple. Can you believe it? First of all, please allow me to reveal it to you with mathematical ideas.

1: Because the result is a fixed value (520.438+03 14 anyway), the result has nothing to do with the number in mind!

2. I remember doing a similar topic in the first grade. . . Xiao Ming misread the xxx number, but did it right. Why? Actually, I want you to prove that the result has nothing to do with that number.

3: Problem solving begins! Let the number in the mind be x, then the equation 2[5(x+52.8)-3.9343]- 10x is obtained.

In fact, not everyone knows that it is a fixed value. If you estimate it, you will find that it is 10x- 10x, which is nothing strange.

5. If you are interested, you can try to make one yourself with algebra.