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