Easiest approach in Python3
\n\n\n# Code\n\nclass Solution:\n    def isFascinating(self, n: int) -> bool:\n        m=str(n*2)\n        o=str(n*3)\n        p=str(n)+m+o\n        k=0\n      
\n\n\n# Code\n```\nclass Solution:\n    def isFascinating(self, n: int) -> bool:\n        m=str(n*2)\n        o=str(n*3)\n        p=str(n)+m+o\n        k=0\n        L=[\'1\',\'2\',\'3\',\'4\',\'5\',\'6\',\'7\',\'8\',\'9\']\n        for i in range(9):\n            if p[i] in L:\n                k+=1\n                L.remove(p[i])\n            else:continue\n        if k==9:\n            return True\n        else:\n            return False\n```
['Python3']