What will come in the place of ‘?’ in the following equation if ‘+’ and ‘–’ are interchanged and ‘×’ and ‘÷’ are interchanged?
21 + 23 – 46 × 23 ÷ 21 = ?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 40.
21 + 23 – 46 × 23 ÷ 21 = ?
After interchanged signs,
= 21 - 23 + (46 ÷ 23) × 21
= 21 - 23 + 2 × 21
= 21 -23 +42
= 40.