0.1+0.01+0.001+0.0001+.=2009/()
问题描述:
0.1+0.01+0.001+0.0001+.=2009/()
答
0.1+0.01+0.001+0.0001+.=1/9=2009/(2009*9)=2009/18081
0.1+0.01+0.001+0.0001+.=2009/()
0.1+0.01+0.001+0.0001+.=1/9=2009/(2009*9)=2009/18081