easy
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):
        n1=2*n
        n2=3*n
        a=str(n)+str(n1)+str(n2)
        sort=sorted(a)
        if sort==list("123456789"):
            return True
        return False



```
['Python']