​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?

(64 A 4) C 28 D 20 C (46 A 23) B 7 C 19 = ?

Given:   'A' stands for '÷', 'B' stands for '×', 'C' stands for '+' and 'D' stands for '–'

Logic: interchange alphabetical letters with mathematical operators and solve as per BODMAS rule.

​$$\begin{array}{|c|c|} \hline \textbf{Operation preference wise} & \textbf{Symbol} \\\hline Brackets &[],{}, () \\ \hline Orders, of & (power), √ (root) , of \\ \hline Division& ÷ \\ \hline Multiplication & × \\ \hline Addition & + \\ \hline Subtraction & - \\\hline \end{array}$$​​

(64 A 4) C 28 D 20 C (46 A 23) B 7 C 19

After interchanging,

(64 ÷ 4) + 28 - 20 + (46 ÷ 23) × 7 + 19

=16 + 8 + 2 × 7 + 19

=43 + 14

Thus, correct option (c).