Test superstition

I took the GMAT at a local testing center. They had computer accommodations for about 15 people, and there was a steady supply of people coming in and out. (Apparently there are many kinds of test given there; the woman I came in with was taking the TOEFL -- Test of English as a Foreign Language).

In the waiting room, there was a "take-a-number" set-up for getting checked in. I got number 12, and I noticed that the next one was "12b," followed by 14. The same was true on the lockers where we stored our stuff. I guess it's like the way American hotels don't have a 13th floor!