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Q: Which two signs should be interchanged to make the equation given below mathematically correct? 12 × 6 + 9 ÷ 3 – 4 = 25
  • A. × and+
  • B. + and –
  • C. ÷ and –
  • D. × and ÷
Correct Answer: Option D - 12 × 6 + 9 ÷ 3 – 4 = 25 From option (d) Interchanging the signs in given equation - 12 ÷ 6 + 9 × 3 – 4 = 25 2 + 9 × 3 – 4 = 25 2 + 27 – 4 = 25 2 + 23 = 25 25 = 25
D. 12 × 6 + 9 ÷ 3 – 4 = 25 From option (d) Interchanging the signs in given equation - 12 ÷ 6 + 9 × 3 – 4 = 25 2 + 9 × 3 – 4 = 25 2 + 27 – 4 = 25 2 + 23 = 25 25 = 25

Explanations:

12 × 6 + 9 ÷ 3 – 4 = 25 From option (d) Interchanging the signs in given equation - 12 ÷ 6 + 9 × 3 – 4 = 25 2 + 9 × 3 – 4 = 25 2 + 27 – 4 = 25 2 + 23 = 25 25 = 25