What will come in the place of question mark (?) in the following equation if '+' and '÷' are interchanged and '×' and '-' are interchanged?
39 + 13 × 12 ÷ 5 - 4 = ?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2, i.e., 11.
39 + 13 × 12 ÷ 5 - 4 = ?
After interchanging signs,
= (39 ÷ 13) - 12 + (5 × 4)
= 3 - 12 + 20
= 23 - 12
= 11