Simplest solution ever in python beat 90%
\n\n# Code\n\nclass Solution:\n    def isFascinating(self, n: int) -> bool:\n        num=str(n)+str(2*n)+str(3*n)\n        for i in num:\n            if num.cou
\n\n# Code\n```\nclass Solution:\n    def isFascinating(self, n: int) -> bool:\n        num=str(n)+str(2*n)+str(3*n)\n        for i in num:\n            if num.count(i)>1 or \'0\' in num:\n                return False\n        return True\n        \n```
['Python', 'Python3']