简算 1/2+1/6+1/12+······+1/9900
简算 1/2+1/6+1/12+······+1/9900
1/2+1/6+1/12+······+1/9900埃及分数怎样算
1、2·······
1+2++3+··········+10000=
1······················
作业1·····
想问一下2分之1+6分之5+12分之11+20分之19+······9900分之9899等于多少?
求(2+5+8······+2000)-(1+4+7······+1999)的值.【简算】
(1)用像······似的······造个句子 (2)用像······一样······造一个句子
俗语和名句的填空1······,自知之明.2······,行必果.3工欲善其事,······.4临渊羡鱼,······.
带有数字的四字词语按顺序1···2···3···4···5···6···7···8···9···10···祝福语
1/20+1/30+1/42······+1/132 简算 帮帮忙!