鹿寨地图:1/27+505/2727+131313/272727+35353535/27272727
来源:百度文库 编辑:中科新闻网 时间:2024/05/08 14:53:01
用简便方法
1/27+505/2727+131313/272727+35353535/27272727
=1/27+5*101/(101*27)+(13*10101)/(27*10101)+35*1010101/(27*1010101)
=1/27+5/27+13/27+35/27
=(1+5+13+35)/27
=54/27=2
1/27+5050/2727+131313/272727+35353535/27272727
=1/27+5*101/27*101+13*10101/27*10101+35*1010101/27*1010101
=1/27+5/27+13/27+35/27
=2
5050/27吧
1/27+5/27+13/27+35/27=2