The following numbers are obviously not perfect squares. Give reason.(i) 1057              (ii) 23453              (iii) 7928                (iv) 222222(v) 64000           (vi) 89722             (vii) 222000           (viii) 505050

Explanation

To determine why the given numbers are not perfect squares, we can use the properties of perfect squares. A number is a perfect square if its last digit (unit place) is one of the following: 0, 1, 4, 5, 6, or 9. Additionally, a perfect square cannot have an odd number of zeros at the end.

Now, let's analyze each number step by step:

### Step-by-Step Solution:

1. **Number: 1057**
- **Last Digit:** 7
...