28
Yes it does prove you have quite a good memory (which I obviously haven't), that is very important if you are going to work in a book store. You need to have not only the memory but a knowledge of, and interest in, books, not only great literature but current favourites and non-fiction. Not everyone can do it, obviously I wouldn't be able to

. I can imagine myself being flustered and unable to find anything

.
Good for those who did well! I haven't looked at all the scores of others but, honestly, it doesn't matter for most of us.