What will come in the place of question mark (?) in the following equation if '+' and '×' are interchanged and '-' and '÷' are interchanged?
39 ÷ 6 - 3 × 9 + 4
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 73.
Given equation: 39 ÷ 6 - 3 × 9 + 4
On interchanging the signs:
39 - 6 ÷ 3 + 9 × 4
39 - 2 + 36
75 - 2 = 73