41·42·43·44·45·46·47·48·49怎样排列让其中每3个数相加等于135拜托各位了 3Q

41·42·43·44·45·46·47·48·49怎样排列让其中每3个数相加等于135拜托各位了 3Q 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·································· 50+49-48-47+46+45-44-43+······-4-3+2+1=? 2^50-2^49-2^48-2^47-2^46-2^45-2^44-2^43-2^42-2^41-2^40-2^39-···-2^2-2-1=?我知道是1,但是过程怎么写? 2^50-2^49-2^48-2^47-2^46-2^45-2^44-2^43-2^42-2^41-2^40-2^39-···-2^2-2-1=?我知道是1,但是过程怎么写? 49+48-47+46-45+44-43+······4-3+1答案是多少啊要过程不好意思写错了49-47+45-43+.....+9-7+5-3+1 如何计算39×41 38×42 37×43····· 更简便? 1+2-3-4+5+6-7-8+9+10···+41+42-43-44等于多少 ···· · · · ···· ·········· ·········· 求··············· 什么植物有应激性只要植物名 ········································································································· 找规律的应用题有19个等式,如下表：1+2+3=4+5-36+7+8+9=10+11+12-313+14+15+16+17=18+19+20+21-322+23+24+25+26+27=28+29+30+31+32-334+35+36+37+38+39=40+41+42+43+44+45-3············那么,第19个等式左右两边的结果是多