1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+?答:加了30两次,所以把25去掉,...,1,等差数列,1,5080,0,(1+100)×100÷2=5050 好像输了两个25,2个30,所以5050-1+30=5079,0,5050,0,1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+25+27+28+29+30+30+31+32+33+34+35+36+37+38+39+40+...