Which two signs should be interchanged to make the given equation correct?
28 + 12 - 21 ÷ 7 × 4 = 60
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. × and -.
28 + 12 - 21 ÷ 7 × 4 = 60
After interchanging signs
⇒ 28 + 12 × (21 ÷ 7) - 4 = 60
⇒ 28 + (12 × 3) - 4 = 60
⇒ (28 + 36) - 4 = 60
⇒ 60 = 60