大家注意观察下面的数字组合，很有意思吧
| 1 | * | 8 | + | 1 | = | 9 |
| 12 | * | 8 | + | 2 | = | 98 |
| 123 | * | 8 | + | 3 | = | 987 |
| 1234 | * | 8 | + | 4 | = | 9876 |
| 12345 | * | 8 | + | 5 | = | 98765 |
| 123456 | * | 8 | + | 6 | = | 987654 |
| 1234567 | * | 8 | + | 7 | = | 9876543 |
| 12345678 | * | 8 | + | 8 | = | 98765432 |
| 123456789 | * | 8 | + | 9 | = | 987654321 |
大家注意观察下面的数字组合，很有意思吧
| 1 | * | 8 | + | 1 | = | 9 |
| 12 | * | 8 | + | 2 | = | 98 |
| 123 | * | 8 | + | 3 | = | 987 |
| 1234 | * | 8 | + | 4 | = | 9876 |
| 12345 | * | 8 | + | 5 | = | 98765 |
| 123456 | * | 8 | + | 6 | = | 987654 |
| 1234567 | * | 8 | + | 7 | = | 9876543 |
| 12345678 | * | 8 | + | 8 | = | 98765432 |
| 123456789 | * | 8 | + | 9 | = | 987654321 |