| 序号 | 题目：1,3,6,7 | |
|---|---|---|
| 1 | ((6 × 3) + 7) − 1 | |
| 2 | ((6 × 3) − 1) + 7 | |
| 3 | ((7 − 1) × 3) + 6 | |
| 4 | (7 + 1) × (6 − 3) | |
| 5 | (6 × 1) × (7 − 3) | |
| 6 | (6 × (7 − 3)) × 1 | |
| 7 | (6 × 3) + (7 − 1) | |
| 8 | 6 × ((7 × 1) − 3) | |
| 9 | 6 × (7 − (3 × 1)) | |
| 10 | 6 × ((7 − 3) × 1) | |
| 11 | (6 × (7 − 3)) ÷ 1 | |
| 12 | (6 ÷ 1) × (7 − 3) | |
| 13 | 6 × ((7 ÷ 1) − 3) | |
| 14 | 6 × ((7 − 3) ÷ 1) | |
| 15 | 6 × (7 − (3 ÷ 1)) | |
| 16 | (7 − 3) ÷ (1 ÷ 6) | |
| 17 | 6 ÷ (1 ÷ (7 − 3)) | |