1/2+1/6+1/12+1/20+1/30+.+1/110=?
4个回答
1/2+1/6+1/12+1/20+1/30+.+1/110
=1-1/2+1/2-1/3+1/3-1/4+1/4-1/5+1/5-1/6+……+1/10-1/11
=1-1/11
=10/11
相关问题
1/2+1/6+1/12+1/20+1/30+1/42+……+1/110=?
-1*6-1*12-1*20-1*30-...-1*110等于几?
6/1+12/1+20/1+30/1+42/1+……+90/1+110/1=?
1/2+1/6+1/12+1/20+.1/110=?
1/2+1/6+1/12+1/20+1/30+1/42+1/56+1/72+190+1/110=?
1/2+1/6+1/12+1/20+1/30+1/42+1/56+1/72+1/90+1/110=?
计算1/2+1/6+1/12+1/20+1/30+1/42+1/56+1/72+1/90+1/110=?
计算1/2+1/6+1/12+1/20+1/30+1/42+1/56+1/72+1/90+1/110=?
1/2+1/6+1/12+1/20+1/30+1/42+1/56+1/72+1/90+1/110 +······1/99
1/2+1/6+1/12+1/20+……+1/90+1/110+1/132