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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? 4
Question

What will come in the place of the question mark (?) in the following equation, if ‘+’ and ‘×’ are interchanged, and ‘−’ and ‘÷’ are interchanged?
42 − 7 × 12 + 3 ÷ 13 = ?

A.

11

B.

15

C.

29

D.

22

Correct option is C

Given: 42 − 7 × 12 + 3 ÷ 13 = ?

Given Sign:
+
-
Interchanged Sign:
×
÷

Logic: BODMAS
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}​​
Changed Equation: 42 ​÷​ 7 + 12 × 3 - 13 = ?
6 + 12 × 3 - 13 = ?
6 + 36 - 13 = ?
42 - 13 = ?
? = 29
Thus, the correct option is (C) 29

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