This was ChatGPT’s answer:
To find the number of times the digit 5 appears when listing the numbers from 189 to 5004, we can analyze each place value separately.
1. **Units place (1s):**
- There are 9 occurrences of 5 in every 100 numbers (from 0 to 99).
- The number of hundreds in the given range is (5004 - 189) / 100 + 1 = 49.
- So, there are 9 * 49 occurrences of 5 in the units place.
2. **Tens place (10s):**
- There is 1 occurrence of 5 in every 10 numbers (from 50 to 59).
- The number of tens in the given range is (5004 - 189) / 10 + 1 = 482.
- So, there are 1 * 482 occurrences of 5 in the tens place.
3. **Hundreds place (100s):**
- There is 1 occurrence of 5 in every 100 numbers (from 500 to 599).
- The number of hundreds in the given range is (5004 - 189) / 100 + 1 = 49.
- So, there are 1 * 49 occurrences of 5 in the hundreds place.
4. **Thousands place (1000s):**
- There is 1 occurrence of 5 in every 1000 numbers (from 5000 to 5999).
- The number of thousands in the given range is (5004 - 189) / 1000 + 1 = 6.
- So, there are 1 * 6 occurrences of 5 in the thousands place.
Now, add up the occurrences from each place:
\[ 9 \times 49 + 1 \times 482 + 1 \times 49 + 1 \times 6 = 441 + 482 + 49 + 6 = 978 \]
Therefore, the digit 5 appears 978 times when listing the numbers from 189 to 5004.
Bunuel, requesting your help!
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