1/3+1/15+1/35+······+1/9999和是多少?

1/3+1/15+1/35+······+1/9999和是多少? 1 2 3 4 ·····7 ·······10 ········?1 3 5 7 ·····?······?··········290 1 4 9 ·····?······?··········? 急·····················1+2+3+...+999=? 计算1/（1*4）+1/（4*7）+1/（7*10)+------+1/(97*100)································································································ 计算：3/1+8/1+15/1+·······+360/1 1+2++3+··········+10000= 8+11+14+17+20+·······+305 数学计算题.呜呜呜1+2+3+4+···················+98+99+100+99+98+···············+3+2+1 阅读只管向前奔跑的答案1、文章开头四句诗有什么作用························································································ 1,3,7,15,（）,63,（）·········找规律 0,1,3,6,10,15,21·········它们的规律是什么? 秦始皇和汉武帝各自的功劳是?（用1·······2·······3··········来说） 2011红领巾快乐数独答案一2·····4·9·631·4·8·8··97··3··3··2·95···95·86···15·3··7··9··47··5·7·3·182·3·4·····7二7·1·8·3·····413·6·2·6···4·8·8·5·1·2·61·····94·2·9·4·7·8· 变态数学题·······方程一道············x+2y+3z=1x=y+12x+3y+5z=2方程组············要过程············我解了之后总觉得无解····· 纸鹤数量的意义比如说 1只纸鹤,代表······· 2只纸鹤,代表······· ······················· ···························· ·················· 越多越好, 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,······.5非学无以广才,······.6······,福兮祸之所伏.7项庄舞剑,······.8······,人以群 矩阵 求逆矩阵 1+a 1 1 ·····11 1+a 1·······1· · · ···························1 1 1 1+a 英语书 40 页 1a 人教版例如：down ·······································across··········································· excel函数 如果a、b和d是空格,结果为空格求a列加b列的和.A·····B····C····结果18 26 35····38 28····21 96····13 34····93····26····12729····93····84····12267····47····51····1