If '−' means '÷', '÷' means '×', '×' means '+' and '+' means '−', then what will come in place of the question mark (?) in the following equation?
5 × 39 ÷ 1407 − 3 + 11562 = ?​​

Given: 5 × 39 ÷ 1407 − 3 + 11562 = ?​​

Using BODMAS rule.

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

New equation: 5 + 39 × 1407 ÷ 3 - 11562 = ?

5 + 39 × 469 - 11562 = ?

5 + 18291 - 11562 = ?

18296 - 11562 = ?

? = 6734

Thus, correct option is (a).