To solve this coding-decoding problem, we need to identify the pattern or rule used to transform the letters into numbers.
Let's analyze the examples given in the question:
We will map each letter to its corresponding number according to the examples provided:
| Letter | Number |
|---|---|
| R | 6 |
| I | 1 |
| P | 3 |
| L | 8 |
| E | 2 |
| F | 9 |
Now, using this mapping, we can determine the code for "PILLER":
Thus, "PILLER" is coded as "318826".
Hence, the correct answer is 318826.