[tex]Think,of\ a\ number\ that\ is\ a\ 7-digit\ number\ without\ repetition. \\ \\ This,involves\ trial\ and\ error\ meaning\ solution\ is\ not\ necessarily \\ given... \\ \\ \boxed{\boxed{Answer=9,876,543}} \\ \\ It\ all\ counts\ seven\ without\ any\ repetition... \\ \\ Hope\ it\ Helps:) \\ Domini[/tex]
