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