Let's do | കൂട്ടിനോക്കാം
| 9 + 1 = 10 |
10 - 1 = 9 |
| 99 + 1 = 100 |
100 - 1 = 99 |
| 999 + 1 = 1000 |
1000 - 1 = 999 |
| 9999 + 1 = 10000 |
10000 - 1 = 9999 |
| 99999 + 1 = 100000 |
100000 - 1 = 99999 |
| 999999 + 1 = 1000000 |
1000000 - 1 = 999999 |
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