Originally posted by 晒月亮的拖鞋 at 2005-5-14 22:02:
设:电话号码为ABCDEFGH,从个位到千万位分别为 A,B,C,D,E,F,G,H
解: ( ABCDV x 80 + 1 ) x 250 + EFGH — 250 ABCD x 20000 + EFGH x 2
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