------
## 最终结论
```python
def check_distinct(tup):
    return len(set(tup)) == len(tup)

# Test cases
assert check_distinct((1, 4, 5, 6, 1, 4)) == False
assert check_distinct((1, 4, 5, 6)) == True
assert check_distinct((2, 3, 4, 5, 6)) == True
```