3/10-3/100-3/1000-.-3/1000000
问题描述:
3/10-3/100-3/1000-.-3/1000000
答
3/10-3/100-3/1000-……-3/1000000
=3/10-3×﹙0.01+0.001+0.0001+0.00001+0.000001+0.000001﹚
=0.3-3×0.011111
=0.3-0.033333
=0.266667