问题描述: 跪拜计算方法:0.1+0.12+0.123+0.1234+.+0.123456789=? 1个回答 分类:数学 2014-10-05 问题解答: 我来补答 0.1+0.12+0.123+0.1234+.+0.123456789 =0.1*9+0.02*8+0.003*7+0.0004*6+0.00005*5+0.000006*4+0.0000007*3 +0.00000008*2+0.000000009*1 =0.9+0.16+0.021+0.0024+0.00025+0.000024+0.0000021+0.00000016+0.000000009=1.083676269 展开全文阅读