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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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