Originally posted by TRAINS44It doesn't. You need three periods after the last nine to show that the series of nines is never ending. The more nines you add to the end of a decimal, the closer it gets to 1; infinite nines means it is infinitely close to 1, which is the same as equalling it.
How can .99999999999 = 1? I'm not as educated as you and SJ247, but could you enlighten me on that?