If '+' means '−', '−' means '×', '×' means '÷', '÷' means '+', then what will come in place of the question mark (?) in the following equation?
1000 × 500 + 10 ÷ 50 – 5 = ?

Given: ​1000 × 500 + 10 ÷ 50 – 5 = ?

Given equation is solve by BODMAS rule.

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

New equation: 1000 ÷ 500 - 10 + 50 × 5 = ?

2 - 10 + 50 × 5 = ?

2 - 10 + 250 = ?

252 - 10 = ?

? = 242

Thus, correct option is (c).