maths ask

分类: 作业答案 • 2022-01-07 12:31:23

问题描述：

maths ask
333333X666666=
1991X19921992X199319931993-1993X19921992X199119911991=
2004+2003-2002-2001+2000+1999-1998-1997+...+4+3-2-1+
(1+1.2)+(2+1.2X2)+(3+1.2X3)+...+(99+1.2X99)+(100+1.2X100)=
要下算式谢谢!

答

333333×666666＝（1000000－1）/3 ×（1000000－1）×2/3=2/9×（1000000－1）^21991×19921992×199319931993-1993×19921992×199119911991=19921992×（1991×199319931993－1993×199119911991）＝19921992×（...

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maths ask

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