What are the odds of any one person having a street address where the digits sum to 11? I figure a couple of asumptions have to be made like, the number of digits in an address fit in a normally distributed curve where the mean is around 3 or 4 digits, and everyone is equally likely to have any one of the 10 digits in their address, and the number 0 can't begin the address. I used to be pretty sharp at math in school, but I have no idea how to deal with this one. I'd appreciate any help. Randy.