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