0.9 = 9/10 or 90%
This is 9:09 am. 09/09/09 (all the nines). However, I'm not sure of the question. if it helps, 1999 had more nines.
08 08 08= August 8, 2008 09 09 09= September 9, 2009
.09 cause to move the decimal you either times by 100 or divdie when u times it moves the decimal to the left and when you divide it it moves two spots to the right
I am assuming that you mean the date 09-09-07, in Roman numerals this would be IX.IX.VII and the full version of the date 09-09-2007 would be IX.IX.MMVII
154 is greater, unless 09 is written as '09, meaning 2009.