回复：特殊的数学题 －－ 神算年龄

suppose 手机号的最后一位 is x, your age is y, then follow the steps and you will find:

from step 1to 6: (x*2+5)*50+1763-y
                       = 100*x+2013-y
                      
That is, the digit in the hundredth is your 手机号的最后一位 and (2013-y) is 你的年龄...

 

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• 分析的很清楚。聪明。 -junbaobao- ♀ (0 bytes) () 05/14/2013 postreply 08:08:29