a mind reader ball?

2004-05-27 5:24 發佈
Uh, Sorry about the following adult's link. I'd like you guys to play the ball with guessing 2 digits as the ball rule explains.

Is it magic or what? What kind of program can do such fun thing???
I never saw a wild thing sorry for itself.
剛剛用程式跑了一下,從10到99,減掉十位數和個位數這兩位數字之合,
結果會有9,18,27,36,45,54,63,72,81這幾種數字,
再看看右邊那個表,對應的符號會一直變,但每一次這幾個數字都是同樣的符號,
所以當然每次都能猜中囉!就是這樣....
十位數字為A
個位數字為B

數值=10*A+B

數值-(A+B)=10*A+B-(A+B)=9A , 一定是9的倍數
Wow, thank you guys for explain it. I guess some magicians use the same trick also

Thanks again.
I never saw a wild thing sorry for itself.
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