What will come in the place of the question mark (?) in the following equation, if '+' and '-' are interchanged and '×' and '÷' are interchanged?
27 × 729 ÷ 135 + 67 - 91 = ?
1
29
2
121
3
21
4
92
What will come in the place of the question mark (?) in the following equation, if '+' and '-' are interchanged and '×' and '÷' are interchanged?
27 × 729 ÷ 135 + 67 - 91 = ?