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