12+14+16+18+······+30=?简便计算

这几道奥数题谁会,求2014在哪一行那一列 1 2 3 4 5 10 9 8 7 6 11 12 13 14 15 20 19 18 17 16 求2014哪一行那一列 1 2 3 4 5 6 7 8 9 ···· ····· ·························· 把自然数从1开始,排列成下表：1 2 4 7 11 16······ 3 5 8 12 17······ 6 9 13 18·····把自然数从1开始,排列成下表：1 2 4 7 11 16······3 5 8 12 17······6 9 13 18······10 14 19······15 20·· 12+14+16+18+······+30=?简便计算 1+2+3+4+5+6+7+8+9+1+11+12+13+14+15````````1+2+3+4+5+6+7+8+9+1+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28++29+30+31+32+33+34+35+36+37+38+39+40+41+42+43+44+45+46+47+48+49+50·································· 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 1 2 9 10 25 26 ··· 4 3 8 11 24 27 ··· 5 6 7 12 23 26··· 17 1816 15 14 13 22 29···1 2 9 10 25 26 ··· 4 3 8 11 24 27 ··· 5 6 7 12 23 26···16 15 14 13 22 29·· ·17 18 19 20 21 30···36 35 34 33 32 31··· · a×14=b×16 要求解的过程!要过程······················急············是a×14=b×16······························································ 用紧张,······················紧张,······················紧张,······················造句,内容是要积极向上的~3Q 1、2、3···2004、2005、2006按1、8、9、16、17···2、7、10、15、18···3、6、11、14、19···4、5、12、13、20···排列,请问2006排在第几行、第几位? 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····· 小升初找规律以下是1-1997的数,分三组A：1 6 7 12 13 18·····B:2 5 8 11 14 17·····C:3 4 9 10 15 16·····B组有多少个数?A组601个数是多少?1200是几组的第几个数? 9·10·11·12·13·14·15·16·17·18·19·20·21·22·23·24·25·26·27·28号用英语怎么说?日期 1 2 3 4 ·····7 ·······10 ········?1 3 5 7 ·····?······?··········290 1 4 9 ·····?······?··········? 急·····················1+2+3+...+999=? 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 .第n行最后一个数是（ ）第一行：第二行：23。第三行：456.第四行：7 8 9 10 ··············第n行最后一个数是多少。 ···· · ·