2003+2002-2001-2000+1999+1998-1997-1996+.......+7+6-5-4+3+2+1

2025-01-02 21:11:57
推荐回答(2个)
回答1:

2003+2002-2001-2000+1999+1998-1997-1996+.......+7+6-5-4+3+2+1
=(2003+2002-2001-2000)+(1999+1998-1997-1996)+.......+(7+6-5-4)+3+2+1
=4+4+...+4+3+2+1
=4*【(2003-4+1)/4】+3+2+1
=2006

回答2:

(2003+2002-2001-2000)+(1999+1998-1997-1996)+.........+(7+6-5-4)+3+2+1
一共有500个4加上6