using python
IntuitionApproachComplexity
Time complexity:

Space complexity:
Code
# Intuition
<!-- Describe your first thoughts on how to solve this problem. -->

# Approach
<!-- Describe your approach to solving the problem. -->

# Complexity
- Time complexity:
<!-- Add your time complexity here, e.g. $$O(n)$$ -->

- Space complexity:
<!-- Add your space complexity here, e.g. $$O(n)$$ -->

# Code
```python []
class Solution(object):
    def isFascinating(self, n):
        x=[]
        for i in range(1,4):
            a=n*i
            for i in str(a):
                if i not in x:
                    x.append(int(i))
        for i in range(1,10):
            if i not in x:
                return False
            for i in x:
                if x.count(i)>1:
                    return False
        return True

        
```
['Python']