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23#
發表於 2009-3-26 01:29 PM
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pure math
+ B& f# G# n; S' J7 b' T0 n5.39.217.76
; c5 O& F$ E' i% p2 b4 B[250(80x+1)+2y-250]/2 = (250*80x+2y)/2 = (2000x+2y)/2 = 1000x+y+ m) k4 o- M) Y. u
5.39.217.76/ g1 l9 K U' W2 c
if x = 111 y = 2222, you number is 111-2222 |
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