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2001+2000-1999-1998+1997+1996……+5+4-3-2+1 简算
人气：151 ℃ 时间：2020-04-18 18:03:12
解答
2001+2000-1999-1998+1997+1996……+5+4-3-2+1
=2001+（2000-1999-1998+1997）+1996……+5+（4-3-2+1）
=2001
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2001+2000-1999-1998+1997+1996...+5+4-3-2+1=（ ）
2002*2001-2001*2000+2000*1999-1999*1998+1998*1997-1997*1996+……+4*3-3*2+2*1
2001+2000-1999-1998+1997+1996-1995-1994+.+5+4-3-2+1
2003+2002-2001-2000+1999+1998-1997-1996+…+7+6-5-4+3+2-1的计算结果是（ ） A.2002 B.2003 C.2004 D.4005
有助于回答者给出2001-2000+1999-1998+1997-1996+.+3-2+1准确的答案
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