No, I'm simply saying those are other examples of numbers with infinite decimal expansions. In fact, most numbers don't have a finite decimal expansion. And th

No, I'm simply saying those are other examples of numbers with infinite decimal expansions. In fact, most numbers don't have a finite decimal expansion. And the claim is correct. It is the statement that the limit of the partial sums of the inverse powers of 9 is 1, which can be rigorously proven with the epsilon-delta definition of a limit.