What will come in the place of the question mark (?) in the following equation if ‘−’ and ‘÷’ are interchanged and ‘+’ and ‘×’ are interchanged?
7 + 5 ÷ 4 + 5 ÷ 36 − 4 × 7 = ?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 13.
Given equation: 7 + 5 ÷ 4 + 5 ÷ 36 − 4 × 7 = ?
On interchanging the signs:
7 × 5 - 4 × 5 - 36 ÷ 4 + 7 = ?
? = 35 - 20 - 9 + 7
? = 42 - 29 = 13