What is the maximum number of different values represented by a single hexadecimal digit?

A single hexadecimal digit can represent values from 0 to 15. This is because the hexadecimal system is base-16, which means it uses 16 distinct symbols to represent values. The symbols are the digits 0 through 9, which represent values zero to nine, and the letters A through F, which represent the values ten to fifteen.

Consequently, there are a total of 16 different values (0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F) that can be represented by a single hexadecimal digit. Each of these symbols uniquely corresponds to a specific integer within the range of values defined by hexadecimal. Thus, the maximum number of different values represented by a single hexadecimal digit is indeed 16.