Explanation

5 × 5 + (55 ÷ 5) - (25 ÷ 5) - (5 × 6) - 1

Solution:

= 5 × 5 + (55 ÷ 5) - (25 ÷ 5) - (5 × 6) - 1

= 5 × 5 + 11 - 5 - (5 × 6) - 1

= 5 × 5 + 11 - 5 - 30 - 1

= 25 + 11 - 5 - 30 - 1

= 36 - 36

= 0

So, the correct answer is 0.