0 out of 464 challenges solved

Closest Smaller Number

Write a Python function `closest_smaller_number(n: int) -> int` that takes an integer `n` and returns the closest smaller number than `n`.

#### Example Usage
```python [main.nopy]
closest_smaller_number(11)  # Output: 10
closest_smaller_number(7)   # Output: 6
closest_smaller_number(12)  # Output: 11
```

#### Constraints
- The input `n` will always be a positive integer greater than 1.
def closest_smaller_number(n: int) -> int:
    """
    Returns the closest smaller number than the given integer n.

    Args:
    n (int): A positive integer greater than 1.

    Returns:
    int: The closest smaller number than n.
    """
    # Placeholder for the solution
    pass