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Check Month Days

Write a Python function `has_31_days(month_number)` that determines whether a given month (represented by its number, 1 for January through 12 for December) has 31 days. Return `True` if the month has 31 days, and `False` otherwise.

#### Example Usage
```python [main.nopy]
print(has_31_days(1))  # Output: True (January has 31 days)
print(has_31_days(2))  # Output: False (February does not have 31 days)
print(has_31_days(4))  # Output: False (April does not have 31 days)
```
def has_31_days(month_number):
    """
    Determine if the given month has 31 days.

    Args:
        month_number (int): The month number (1 for January, 12 for December).

    Returns:
        bool: True if the month has 31 days, False otherwise.
    """
    # Placeholder for the solution
    pass