What will come in the place of the question mark (?) in the following equation, if ‘+’ and ‘–’ are interchanged, and ‘×’ and ‘÷’ are interchanged?
216 × 9 + 52 – 7 ÷ 7 = ?

Correct option is C

Given: 216 × 9 + 52 – 7 ÷ 7 = ?
‘+’ and ‘-’ are interchanged and ‘×’ and ‘÷’ are interchanged
Logic:To solve this, interchange the signs as directed in the statement in the given equation to solve the equation. For this, we follow the BODMAS rule (Brackets, Orders (i.e., powers, and square roots, etc.), Division, Multiplication, Addition, and Subtraction).
We get, 216 ÷ 9 – 52 + 7 × 7 = ?
24 – 52 + 7 × 7 = ?
24 – 52 + 49 = ?
73 – 52 = ?
(?) = 21
The final answer is 21. So, option (c) is the correct answer.