What will come in the place of ‘?’ in the following equation, if ‘+’ and ‘ - ‘ are interchanged and also ‘×’ and ‘÷’ are interchanged? 42 + 10 × 5−9 ÷ 1 = ?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 49
Given equation: 42 + 10 × 5−9 ÷ 1 = ?
if ‘+’ and ‘ - ‘ are interchanged and also ‘×’ and ‘÷’ are interchanged, then the equation becomes:
42 − 10 ÷ 5 + 9 × 1 = ?
⇒ 42 − 2 + 9 = 51 - 2 = 49
Hence, option 2 is the correct option.