2017-II-32

Ans: D

\begin{array}{cl} 8^{3} + 8^{19} \\ = & (2^{3})^{3} + (2^{3})^{19} \\ = & 2^{9} + 2^{57} \\ = & 2^{4 \times 2 + 1} + 2^{4 \times 14 + 1} \\ = & 2 \times (2^{4})^{2} + 2 \times (2^{4})^{14} \\ = & 2 \times 16^{2} + 2 \times 16^{14} \\ = & 200 000 000 000 200_{16} \end{array}

2017, HKDSE-MATH, Paper 2 Numeral System