If ‘A’ stands for ‘÷’, ‘B’ stands for ‘×’, ‘C’ stands for ‘+’, and ‘D’ stands for ‘–’, what will come in place of the question mark (?) in the following equation?
404 B 2 D 101 A 101 C 6 = (?)

Given:
404 B 2 D 101 A 101 C 6 = (?)
‘A’ stands for ‘÷’, ‘B’ stands for ‘×’, ‘C’ stands for ‘+’, and ‘D’ stands for ‘–’.
​$$\begin{array}{|c|c|} \hline\textbf{Operation preference wise} & \textbf{Symbol} \\\hline\text{Brackets} &[],{}, () \\ \hline \text{Orders, of} & (power), √ (root) , of \\ \hline \text{Division}& ÷ \\ \hline \text{Multiplication} & × \\\hline \text{Addition} & + \\ \hline \text{Subtraction} & -\\\hline\end{array}$$​​
404 × 2 – 101 ÷ 101 + 6 = (?)
404 × 2 – 1 + 6 = (?)
808 – 1 + 6 = (?)
814 – 1 = (?)
(?) = 813
The final answer is 813.

So, option (c) is the correct answer. ​​