Explanation:

To determine the correct option, let's analyze each one:

- Option 1 (- and +)

- Interchanging + and - gives: 36 + 6 ÷ 6 × 6 - 30

- Calculation:

36 + 6 ÷ 6 × 6 - 30

= 36 + 1 × 6 - 30

= 36 + 6 - 30

= 12

- Result is not 0, so it's incorrect.

- Option 2 (+ and ×)

- Interchanging + and × gives: 36 - 6 ÷ 6 + 6 × 30

- Calculation:

36 - 6 ÷ 6 + 6 × 30

= 36 - 1 + 180

= 215

- Doesn't equal 0, so it's incorrect.

- Option 3 (÷ and ×)

- Interchanging ÷ and × gives: 36 - 6 × 6 ÷ 6 + 30

- Calculation:

36 - 6 × 6 ÷ 6 + 30

= 36 - 6 × 1 + 30

= 60

- Result is not 0, so it's incorrect.

- Option 4 (- and ÷)

- Interchanging - and ÷ gives: 36 ÷ 6 - 6 × 6 + 30

- Calculation:

36 ÷ 6 - 6 × 6 + 30

= 6 - 36 + 30

= 0

- The result is 0, making it the correct answer.

Your Answer: