What will come in place of the question mark (?) in the following equation, if '+' and '-' are interchanged and '×' and '÷' are interchanged?
81 × 3 - 9 ÷ 3 + 2 = ?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 2 i.e. 52.
Given equation: 81 × 3 - 9 ÷ 3 + 2 = ?
On interchanging the sign:
81 ÷ 3 + 9 × 3 - 2 = ?
? = 27 + 27 - 2
? = 54 - 2 = 52