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0.1,0.2,0.3,0.4,0.5,0.6,0.7,0.8,0.9,0.10,0.11,0.12,0.13,0.14,0.15,按规律排成下列三角形数阵,0.2001是第几行,左起第几个数字?

题目详情
0.1,0.2,0.3,0.4,0.5,0.6,0.7,0.8,0.9,0.10,0.11,0.12,0.13,0.14,0.15,按规律排成下列三角形数阵,0.2001是第几行,左起第几个数字?
▼优质解答
答案和解析
0.1
0.2,0.3,
0.4,0.5,0.6
0.7,0.8,0.9,0.10
0.11,0.12,0.13,0.14,0.15
0.16 ,0.17,0.18 ,0.19,0.20 ,0.201
0.2001是第6行,左起第6个数字