=1+1/10+2+1/40+3+1/88+.....+9+1/754+10+1/928=(1+2+3+.....+10)+(1/10+1/40+1/88+.....+1/754+1/928)=55+(1/2×5+1/5×8+1/8×11+.....+1/26×29+1/29×32)=55+1/3(1/2-1/5+1/5-1/8+1/8-1/11+.....+1/26-1/29+1/29-1/32)=55+1/3(1/2-1/32)=55+1/3×15/32=55又32分之5