>>29
The "..." notation in this numeral means nothing more nor less than that you are taking a limit.
No, it's not. It's a shorthand notation for an infinite number of 9s, just like 1 is a shorthand notation for "1." followed by an infinite number of 0s.
Since you're the first to mention the difference between numerals and numbers in this thread, it's pretty ironic that you'd get it that wrong.