| 3 |
| 5 |
| 12 |
| 20 |
| 3 |
| 4 |
| 15 |
| 20 |
因为运到的货物比这批货物的（
| 12 |
| 20 |
| 3 |
| 5 |
| 15 |
| 20 |
| 3 |
| 4 |
所以运到的货物可以是
| 13 |
| 20 |
| 14 |
| 20 |
因此运完这批货物的次数
| 20 |
| 15 |
| 20 |
| 14 |
| 20 |
| 13 |
| 20 |
| 12 |
即
| 20 |
| 3 |
| 50 |
| 7 |
| 100 |
| 13 |
| 25 |
| 3 |
因此最少
| 20 |
| 3 |
| 25 |
| 3 |
取整就是最少7次，最多9次．
故答案为：7，9．
| 3 |
| 5 |
| 3 |
| 4 |
| 3 |
| 5 |
| 12 |
| 20 |
| 3 |
| 4 |
| 15 |
| 20 |
| 12 |
| 20 |
| 3 |
| 5 |
| 15 |
| 20 |
| 3 |
| 4 |
| 13 |
| 20 |
| 14 |
| 20 |
| 20 |
| 15 |
| 20 |
| 14 |
| 20 |
| 13 |
| 20 |
| 12 |
| 20 |
| 3 |
| 50 |
| 7 |
| 100 |
| 13 |
| 25 |
| 3 |
| 20 |
| 3 |
| 25 |
| 3 |