| 序号 | 题目:1,2,11,12 | |
|---|---|---|
| 1 | ((12 + 11) + 2) − 1 | |
| 2 | ((12 + 2) + 11) − 1 | |
| 3 | ((12 − 1) + 2) + 11 | |
| 4 | ((11 + 2) + 12) − 1 | |
| 5 | ((12 + 2) − 1) + 11 | |
| 6 | ((12 + 11) − 1) + 2 | |
| 7 | (12 + 2) + (11 − 1) | |
| 8 | (12 + (11 − 1)) + 2 | |
| 9 | (12 + (2 − 1)) + 11 | |
| 10 | (12 + 11) + (2 − 1) | |
| 11 | (11 + 2) + (12 − 1) | |
| 12 | (11 + (12 − 1)) + 2 | |
| 13 | 12 + ((11 + 2) − 1) | |
| 14 | 12 + ((11 − 1) + 2) | |
| 15 | 12 + (11 + (2 − 1)) | |
| 16 | 2 ÷ (1 − (11 ÷ 12)) | |