Analysis: Mark the spaces from the first line to the third line as ABCDEFGH to get a 9, so a ten b = 13 and e ten h = 5. There are several possibilities for A+B = 13, but A+c÷F=4, so A can only take 1, 2, 3.

I took 3 first, that is, A is 3 and B is 10, so B-DXG = 4, so DXG = 6.

Observing the characteristics of the second line and the second line, the two formulas are subtracted to get G-H = DE, which brings in all possibilities and denies them.

If not, then take A = 2, B = 1 1, then C = 2f, DXG = 7, E = 10 h = 5, and take various situations to get the answer I gave you!

The concept of flat code is also called positive code. The first six numbers issued by Mark Six Lottery Company in the current period are called flat codes, also called positive codes. The first number sent is called Ping Code 1, followed by Ping Code 2, Ping Code 3 and Ping Code 6, which are not sorted by size.