Eleven Is The Magic Number

I bought some brussels sprouts today so I can test out some new recipes over Thanksgiving as a trial run for Christmas. This being America, where brussels are a "gourmet" vegetable, they only came heavily refrigerated in a 2lb plastic bag. (Heavily refrigerated, means they were dripping wet and had to be dried before I stowed them in my fridge). What really caught my eye is that the bag "serves 11". To someone anal like me, that is really irritating. Why couldn't it serve 10 or 12 people, a nice, neat, tidy number? 11 is just so abstract! I bet they came up with that number and then used some fancy formula to make a serving of 2.9 ounces of brussels, less nutritional that a squirt of ketchup!