The digit 1 appears 21 times when counting from 1 to 100.
Detailed Breakdown
Here's a breakdown of where the digit 1 appears between 1 and 100, based on the provided reference:
| Number | Occurrences of '1' |
|---|---|
| 1 | 1 |
| 10 | 1 |
| 11 | 2 |
| 12 | 1 |
| 13 | 1 |
| 14 | 1 |
| 15 | 1 |
| 16 | 1 |
| 17 | 1 |
| 18 | 1 |
| 19 | 1 |
| 21 | 1 |
| 31 | 1 |
| 41 | 1 |
| 51 | 1 |
| 61 | 1 |
| 71 | 1 |
| 81 | 1 |
| 91 | 1 |
| 100 | 1 |
| Total | 21 |
As you can see, the number 1 appears 21 times from 1 to 100, including the two 1's in the number 11. The reference correctly identifies all occurrences of the digit '1' within the specified range.
