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