-1*6-1*12-1*20-1*30-...-1*110等于几?
1个回答
-1/6-1/12-1/20-1/30-...-1/110
=-(1/2-1/3+1/3-1/4+1/4-1/5+1/5-1/6+……+1/10-1/11)
=-(1/2-1/11)
=-5/11
相关问题
1/2+1/6+1/12+1/20+1/30+.+1/110=?
1/2+1/6+1/12+1/20+1/30+1/42+……+1/110=?
6/1+12/1+20/1+30/1+42/1+……+90/1+110/1=?
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+.1/110=?
1/6+1/12+1/20+1/30+······+1/4030056等于多少?
1/2+1/6+1/12+1/20+1/30+1/42+1/56+1/72+1/90+1/110=?
1/12+1/20+1/30+1/42+1/56最终等于几?
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=?