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By interchanging the given two signs which of the following equation(s) will be correct?
Question

By interchanging the given two signs which of the following equation(s) will be correct?

A.

Both I and II

B.

Neither I nor II

C.

Only II

D.

Only I

Correct option is A

Given
Given Sign
+
Interchanged Sign
×\times​​
Using BODMAS rule.
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}
Equation I: 16 ×\times 9 + 2 ÷\div 3 - 5 = 17
New equation: 16 + 9 ×\times​ 2 ÷\div​ 3 - 5 = 17
16 + 6 - 5 = 17
16 +1 = 17
17 =17
Equation II: 43 ×\times 11 - 44 ÷\div 11 + 11 = 10
New equation: 43 + 11 - 44 ÷\div​ 11 ×\times​ 11 = 10
43 + 11 - 4 ×\times 11 = 10
43 + 11 - 44 = 10
54 - 44 = 10
10 = 10
So, Both I and II is true.
Thus, correct option is (a).

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