Travelogue-Some numbers for you to chew on

So, I noticed this over the last few days.  I arrive in Incheon the first time on the 10th.  When I arrived in Narita, I reserved a seat on the 3:10pm train heading to Shinagawa.  I was assigned seat 10D.  The Toyoko Inn gave me room 1010.  Here at the Best Western, I got room 1011.  Curious how 10 keeps popping up.  and, these are just the ones that I noticed.