Which of the following two numbers should be interchanged to make the following equation correct?

35 × 13 ÷ 7 + 9 – 14 = 44

Logic: interchange numbers and solve as per BODMAS rule.

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

Check option A,35 and 14

35 × 13 ÷ 7 + 9 – 14 = 44

After interchanging,

14 × 13 ÷ 7 + 9 – 35 = 44

Here, 13 is perfectly not divisible by 7.

So, its not correct option.

Check option B, 13 and 7

35 × 13 ÷ 7 + 9 – 14 = 44

After interchanging,

35 × 7 ÷ 13 + 9 – 14 = 44

Here, 7 is perfectly not divisible by 13.

So, its not correct option.

Check option C,7 and 9

35 × 13 ÷ 7 + 9 – 14 = 44

After interchanging,

35 × 13 ÷ 9 + 7 – 14 = 44

Here, 13 is perfectly not divisible by 9.

So, its not correct option.

Check option D,9 and 13

35 × 13 ÷ 7 + 9 – 14 = 44

After interchanging,

35 × 9 ÷ 7 + 13 – 14 = 44

45 -1 = 44

So, its correct option.

Thus, correct option is (d).