What will come in the place of the question mark (?) in the following equation, if ‘+’ and ‘−’ are interchanged and ‘×’ and ‘÷’ are interchanged?
66 × 6 ÷ 3 − 128 ÷ 2 + 15 × 3 − 16 ÷ 2 + 17 = ?

Information Given:
Operator change:

+ ↔ −
× ↔ ÷

Original expression:
66 × 6 ÷ 3 − 128 ÷ 2 + 15 × 3 − 16 ÷ 2 + 17

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

Step-by-step (after interchange):
66 ÷ 6 × 3 + 128 × 2 − 15 ÷ 3 + 16 × 2 − 17

Apply BODMAS:
66 ÷ 6 = 11
11 × 3 = 33
128 × 2 = 256
15 ÷ 3 = 5
16 × 2 = 32

Now:
33 + 256 − 5 + 32 − 17
= 289 − 5 + 32 − 17
= 284 + 32 − 17
= 316 − 17
= 299

Final Answer:
299

Final Correct Option:
(D)