| 1 |
| 3 |
| . |
| 5 |
| 5 |
| 7 |
因为
| 1 |
| 3 |
| 1×35 |
| 3×35 |
| 35 |
| 105 |
| A |
| 5 |
| 21A |
| 5×21 |
| 21A |
| 105 |
| 5 |
| 7 |
| 5×15 |
| 7×15 |
| 75 |
| 105 |
且
| 35 |
| 105 |
| 21A |
| 105 |
| 75 |
| 105 |
则有35<21A<75,
于是可得:
| 35 |
| 21 |
| 75 |
| 21 |
| 5 |
| 3 |
| 25 |
| 7 |
则1<A<4,
所以这样的整数有2、3共2个数字.
故答案为:2、3.
编辑:chaxungu时间:2026-04-27 14:05:35分类:小学数学题库
| 1 |
| 3 |
| . |
| 5 |
| 5 |
| 7 |
| 1 |
| 3 |
| 1×35 |
| 3×35 |
| 35 |
| 105 |
| A |
| 5 |
| 21A |
| 5×21 |
| 21A |
| 105 |
| 5 |
| 7 |
| 5×15 |
| 7×15 |
| 75 |
| 105 |
| 35 |
| 105 |
| 21A |
| 105 |
| 75 |
| 105 |
| 35 |
| 21 |
| 75 |
| 21 |
| 5 |
| 3 |
| 25 |
| 7 |