答会必踩!1.0.9+0.99+0.9992.9999+9998+9997+9996

bao_jay2022-10-04 11:39:541条回答

已提交,审核后显示!提交回复

共1条回复
walkmanwang 共回答了22个问题 | 采纳率90.9%
1.
0.9+0.99+0.999
=1-0.1+1-0.01+1-0.001
=3-0.111
=2.889
2.
9999+9998+9997+9996
=10000-1+10000-2+10000-3+10000-4
=40000-10
=39990
1年前

相关推荐

大家在问