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Nov 18, 2016 at 4:02 comment added Steven Alexis Gregory @LưuVĩnhPhúc - $99^2, 999^2, 9999^2$?
Mar 23, 2016 at 6:08 comment added phuclv What is special about the numbers 9801, 998001, 99980001 ..?
Dec 31, 2014 at 11:32 comment added Madivad since each number is represented by two digits (01, 02, 03...) and every number to 99 is represented, that's 99x2 + 1 (for the final zero). That's 199 repeating digits.
S Apr 28, 2013 at 5:18 review Low quality posts
Apr 28, 2013 at 6:31
S Apr 28, 2013 at 5:18 review Late answers
Apr 28, 2013 at 5:21
S Apr 28, 2013 at 5:18 review First posts
Apr 28, 2013 at 5:22
Apr 28, 2013 at 4:59 history answered Seth CC BY-SA 3.0