Which of the following interchange of numbers and signs would make the given equation correct?
512 × 64 ÷ 5 + 30 – 50 = 20

Correct option is C

512 × 64 ÷ 5 + 30 – 50 = 20
Form option 20 and 50, × and ÷
After the changing the digit and sings in the given example and apply the BODMAS rule-
512 ÷ 64 × 5 + 30 – 20 = 50
8× 5 + 30 – 20 = 50
40 + 30 – 20 = 50
70 – 20 = 50
50 = 50
Therefore, the correct answer is (c).