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23#
發表於 2009-3-26 01:29 PM
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pure math
3 w% @# _2 s+ I9 G1 U" W5.39.217.76
- {5 R5 c/ ?3 m# s[250(80x+1)+2y-250]/2 = (250*80x+2y)/2 = (2000x+2y)/2 = 1000x+y2 s3 n z4 l& i3 s$ j$ Y
1 `, K3 Z3 g& r9 D公仔箱論壇if x = 111 y = 2222, you number is 111-2222 |
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