Which two signs should be interchanged to make the following equation correct?
18 − 23 × 455 ÷ 7 + 28 = 377
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. − and ×.
Option 2: – and ×
= 18 × 23 – (455 ÷ 7) + 28
= (18 × 23) – 65 + 28
= 414 – 65 + 28
= 442 – 65
= 377
Hence, – and × should be interchanged to make the equation correct.