题目内容
| 1 |
| 1 |
| 1 |
| 2 |
| 2 |
| 2 |
| 1 |
| 3 |
| 2 |
| 3 |
| 3 |
| 3 |
| 1 |
| 4 |
| 2 |
| 4 |
| 3 |
| 4 |
| 4 |
| 4 |
| 1 |
| 10 |
| 2 |
| 10 |
| 9 |
| 10 |
| 10 |
| 10 |
| 1 |
| 1 |
| 1 |
| 2 |
| 2 |
| 2 |
| 1 |
| 3 |
| 2 |
| 3 |
| 3 |
| 3 |
| 1 |
| 4 |
| 2 |
| 4 |
| 3 |
| 4 |
| 4 |
| 4 |
| 1 |
| 10 |
| 2 |
| 10 |
| 9 |
| 10 |
| 10 |
| 10 |
=1+
| 1+2 |
| 2 |
| 1+2+3 |
| 3 |
| 1+2+3+4 |
| 4 |
| 1+2+…+9+10 |
| 10 |
=
| 1+1 |
| 2 |
| 2+1 |
| 2 |
| 3+1 |
| 2 |
| 10+1 |
| 2 |
=
| 1+2+…+10 |
| 2 |
| 1 |
| 2 |
=27.5+5,
=32.5.
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