What will come in place of the question mark (?) in the following equation if ‘+’ and ‘−‘ are interchanged and ‘×’ and ‘÷’ are interchanged?
15 − 7 ÷ 4 + 36 × 9 = ?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 39.
Given series: 15 − 7 ÷ 4 + 36 × 9 = ?
On interchanging the signs:
15 + 7 × 4 - 36 ÷ 9 = ?
? = 15 + 28 - 4
? = 43 - 4 = 39