What will come in the place of the question mark '(?)' in the following equation, if  '×' and '+' are interchanged and '-' and '÷' are interchanged

57 ÷ 9 × 50 - 5 + 2 = ?

Given: 57 ÷ 9 × 50 - 5 + 2 = ?

Logic: BODMAS

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

After interchanging the sign, Equation becomes: 57 - 9 + 50 ÷ 5 × 2 = ?

57 - 9 + 50 ÷ 5 × 2 = ?

57 - 9 + 10 × 2 = ?

57 - 9 + 20 = ?

77 - 9 = ?

Thus, the correct option is (a) 68.

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