5ICHINA.NET I love China's original original, please respect
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A colleague sent me a small game for me this morning. You can take a look. Http://www.5ichina.net/other/readheart.htm is not very magical? . . . . . . I thought I think so at first. After analysis. . . . . .
In fact, a two-digit number thus thought can be set to 10x y (1 <= x <= 9, 0 <= y <= 9); then after subtracting ten digits and bit number after processing 10X Yxy = 9x; so it is only possible to be 9, 18, 27, 36, 45, 54, 63, 72, 81. And the color of these numbers don't know if you pay attention, it's all the same answer is here :)
