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2001+2002+2003+2004+2005分之2002+2003+2004?
人气:471 ℃ 时间:2019-09-26 15:35:10
解答
2001+2002+2003+2004+2005分之2002+2003+2004=5*2003分之3*2003=5分之3
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1/2001*2002+1/2002*2003+1/2003*2004+1/2004*2005+1/2005=?/?
计算:2005×2004-2004×2003+2003×2002-2002×2001+…+3×2-2×1=_.
A=-2001×2002×2003/2004×2005×2006
2005-2004+2003-2002+2001……+3-2+1
2008*2007-2006*2005+2004*2003-2002*2001
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