What will come in the place of the question mark ‘(?)’ in the following equation, if ‘×’ and ‘÷’ are interchanged and ‘−’ and ‘+’ are interchanged?
72 + 5 − 42 × 7 ÷ 1 = ?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 73.
Given equation; 72 + 5 − 42 × 7 ÷ 1 = ?
After interchanging the sign:
72 - 5 + 42 ÷ 7 × 1 = ?
? = 72 - 5 + 6
? = 78 - 5 = 73