What is the principle of the magical mind-reading handed down by gypsies?

"The magical mind-reading handed down by Gypsies can measure your inner feelings" is actually a math game.

Tip:

Choose a two-digit number at will (in other words, choose a number from 10~99 at will), add the ten digits of this number to the four digits, and then subtract the sum from the selected number. For example, if you choose 23, then 2+3=5, and then 23-5= 18.

Find the number corresponding to the last number in the chart, remember this number, and then click the crystal ball. You will find that the figure displayed in the crystal ball is the one you just remembered in your mind.

Answer; It's just accurate math. What you calculate is a multiple of 9, and then every time you click a multiple of 9, the pattern changes.

The principle is that the rules of the play are as follows:

Pick one or two numbers at will (or? Choose a number from 0 to 99), add the ten digits of this number to the four digits, and then subtract the sum from the arbitrarily selected number. For example, if you choose 23, then 2+3=5, and then 23-5= 18.

Find the number corresponding to the last number in the chart, remember this number, and then click the crystal ball. You will find that the figure displayed in the crystal ball is the one you just remembered in your mind.

In fact, this game already has an html version, but now it has been replaced by a flash version. The whole secret of this game lies in two points. One is the special calculation method; The second is this symbol lookup table.

The first point can be explained by simple algebra. Any two-digit number can be abbreviated as 10*A+B, where (a and b are both numbers). For example, 23 in the example is 10*2+3. Then subtract the sum of the digits of this number, and the algebraic method is 10*A+B-(A+B). If you combine similar items, the result is 9*A, that is to say, no matter what two digits you come up with, after calculating according to his method, the result is 9*A, that is to say, the result can only be a multiple of 9,65438+. So in FLASH, just make sure that the symbols represented by these numbers are consistent. But some people say that if this is the case, the results of each query will be different. The secret is in this look-up table. In fact, this watch is different every time, and it has been secretly changed unconsciously. Some people claim that this is a gypsy mind-reading, but because this watch must change all the time, the game can't be played in the traditional way, except through a computer. This is also the unique mind-reading of computers.