Which of the are square of even number ?
196
441
900
625
324
484
961
7396
8649
4225

Answer

To determine which of the given numbers are squares of even numbers, we will check each number individually to see if they can be expressed as the square of an even integer.

### Step-by-Step Solution:

1. **Check 196**:
- Calculate the square root: \( \sqrt{196} = 14 \)
- Since 14 is an even number, **196 is a square of an even number**.

2. **Check 441**:
- Calculate the square root: \( \sqrt{441} = 21 \)
- Since 21 is an odd number, **441 is not a square of an even number**.

3. **Check 900**:
- Calculate the square root: \( \sqrt{900} = 30 \)
- Since 30 is an even number, **900 is a square of an even number**.

4. **Check 625**:
- Calculate the square root: \( \sqrt{625} = 25 \)
- Since 25 is an odd number, **625 is not a square of an even number**.

5. **Check 324**:
- Calculate the square root: \( \sqrt{324} = 18 \)
- Since 18 is an even number, **324 is a square of an even number**.

6. **Check 484**:
- Calculate the square root: \( \sqrt{484} = 22 \)
- Since 22 is an even number, **484 is a square of an even number**.

7. **Check 961**:
- Calculate the square root: \( \sqrt{961} = 31 \)
- Since 31 is an odd number, **961 is not a square of an even number**.

8. **Check 7396**:
- Calculate the square root: \( \sqrt{7396} = 86 \)
- Since 86 is an even number, **7396 is a square of an even number**.

9. **Check 8649**:
- Calculate the square root: \( \sqrt{8649} = 93 \)
- Since 93 is an odd number, **8649 is not a square of an even number**.

10. **Check 4225**:
- Calculate the square root: \( \sqrt{4225} = 65 \)
- Since 65 is an odd number, **4225 is not a square of an even number**.

### Summary of Results:
- The numbers that are squares of even numbers are: **196, 900, 324, 484, and 7396**.