The problem involves finding the code for the letter 'T' based on the given coded words: 'HOUR' is coded as '3867' and 'HURT' is coded as '5836'. This is a type of substitution cipher where letters are replaced by digits.
We need to compare the two words and their codes to deduce the mapping:
Let's find the common letters between 'HOUR' and 'HURT' and the common digits between their codes '3867' and '5836'.
This implies that the letters H, U, and R correspond to the digits 3, 8, and 6 in some order.
Now, let's focus on the word 'HURT' and its code '5836'.
Thus, the code for 'T' is 5.