题目内容
1-
-
-
-…-
.
| 1 |
| 10 |
| 1 |
| 100 |
| 1 |
| 1000 |
| 1 |
| 1000000000 |
1-
-
-
-…-
,
=1-(0.1+0.01+0.001+…0.000000001),
=1-0.111111111,
=0.888888889.
| 1 |
| 10 |
| 1 |
| 100 |
| 1 |
| 1000 |
| 1 |
| 1000000000 |
=1-(0.1+0.01+0.001+…0.000000001),
=1-0.111111111,
=0.888888889.
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