1/() 1/() 1/() /() 1/() 1/()=1括号里填什么自然数1/() 1/() 1/() /() 1/() 1/()=1括号里填什么自然数
1/() 1/() 1/() /() 1/() 1/()=1括号里填什么自然数1/2+1/4+1/8+1/12+1/24+1/36=1
2 4 8 12 36 以此类推
1+1-1