What will come in the place of the question mark ‘(?)’ in the following equation, if ‘÷’ and ‘×’ are interchanged and ‘+’ and ‘−’ are interchanged?
50 − 9 ÷ 1 + 63 × 7 = ?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 50.
Given equation: 50 − 9 ÷ 1 + 63 × 7 = ?
If ‘÷’ and ‘×’ are interchanged and ‘+’ and ‘−’ are interchanged, then
50 + 9 × 1 − 63 ÷ 7 = ?
= 50 + 9 × 1 − 9
= 50 + 9 − 9
= 50