1/2+1/6+1/12+1/20+1/30+1/42+1/56+1/72+1/90+1/110=?用简便运算!求.

来源：学生作业帮助网 编辑：作业帮 时间：2024/11/02 20:24:32
1/2+1/6+1/12+1/20+1/30+1/42+1/56+1/72+1/90+1/110=?用简便运算!求.
x)3767bCH$abY lOY|]Ó}_|tgl`yv68.[6 T bY&zZ@%mh64 5(z 1/3h

1/2+1/6+1/12+1/20+1/30+1/42+1/56+1/72+1/90+1/110=?用简便运算!求.
1/2+1/6+1/12+1/20+1/30+1/42+1/56+1/72+1/90+1/110=?用简便运算!
求.

1/2+1/6+1/12+1/20+1/30+1/42+1/56+1/72+1/90+1/110=?用简便运算!求.
1/2+1/6+1/12+1/20+1/30+1/42+1/56+1/72+1/90+1/110=
=1/2+(1/2-1/3)+(1/3-1/4)+.*(1/9-1/10)+(1/10-1/11)
=1-1/11
=10/11.