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What will come in the place of the question mark (?) in the following equation, if ‘+’ and ‘−’ are interchanged and ‘×’ and ‘÷’ are interchanged?
Question

What will come in the place of the question mark (?) in the following equation, if ‘+’ and ‘−’ are interchanged and ‘×’ and ‘÷’ are interchanged?
51 ÷ 12 + 162 × 3 − 104 =?​

A.

662

B.

642

C.

672

D.

652

Correct option is A

​Given:
51 ÷ 12 + 162 × 3 − 104 = ?
​Operation preference wiseSymbolBrackets[],,()Orders, of(power),√(root),ofDivision÷Multiplication×Addition+Subtraction−\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} ​​
Given
+
×
Interchange
−
÷
 New Expression: 51 × 12 − 162 ÷ 3 + 104 = ?
51 × 12 − 54 + 104 = ?
51 × 12 − 54 + 104 = ?
612 − 54 + 104 = ?
716 − 54 = ?
? = 662 

Thus, correct option is (a).

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