How could you make error? did you do it using calculator or standard software?

How could you make error? did you do it using calculator or standard software?

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送交者: blackbox 于 2006-07-24, 17:30:27:

回答: TAX 问题由 xinlihuaxys 于 2006-07-24, 16:50:47:

I put a wrong number in one of the boxes. (无内容) - xinlihuaxys (0 bytes) 2006-07-24, 18:16:30 (95489)
one easy method to save $250 is to - blackbox (50 bytes) 2006-07-24, 17:35:12 (95476)