Which of the mathematical signs should be interchanged in the below equation to make it mathematically correct?
72 - 6 + 2 × 216 ÷ 24 = 420
Show answer & explanation
Correct answer: A
Explanation
The correct answer is Option 1 i.e. - and ÷.
Given equation: 72 - 6 + 2 × 216 ÷ 24 = 420
Option 1: - and ÷
After interchanging the expression becomes:
= 72 ÷ 6 + 2 × 216 - 24 = 420
= 12 + 2 × 216 - 24
= 12 + 432 - 24
= 444 - 24
= 420 = 420
As we have found our answer, there is no need to check further options.
Hence, - and ÷ is the correct answer.