A number nnn in base bbb can be written as dkdk−1…d1d0d_k d_{k-1} \ldots d_1 d_0dkdk−1…d1d0. What does did_idi represent?
The iii-th power of nnn
The coefficient of bib^ibi in the expansion of nnn
The sum of all digits from position 0 to iii
The remainder when nnn is divided by bib^ibi