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发表于 10-5-2013 05:37 PM
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看大家都说是数学题，可是没有人肯做（可能各位认为太容易了吧。。。ｌｏｌ），那么我就不客气咯。。。。ｌｏｌ
let the last digit be 'x'; multiply by 2 then plus 5 will become 2x+5; then multiply by 50 (expansion) will become 100x + 250; then 100x+250+1763 equals to 100x+2013; note the '2013' is this year, so when you minus the year in which u were born, it gives ur age, for instance, 100x+2013-1986 = 100x+27. I guess til here u already figure out that the last digit 'x' is 100 times. So, when u add the 100x and 27: let x=8, 100x=800, 100x+27 = 800+27 = 827, so the last digit of ur phone number is the 8 in 827, and ur age is 27 |
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很准～ 本帖最后由 bosco2006 于 10-5-2013 06:22 PM 编辑 
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