Following the third, fourth, or fifth digit, every number up through 15 is the account number while that final number, 16, is the check digit. All Discover cards start with the number six and are 16 digits in length, while petroleum cards start with the number seven and airline cards start with the number one.
Vatican City. Vatican City â 0.2 square miles â The worldâs smallest state, the Vatican has a population of 770, none of whom are permanent residents. The tiny country which surrounds St. Peterâs Basilica is the spiritual center for the worldâs Roman Catholics (over 1 billion strong).
The 21-year-old, who suffers from dwarfism, lives with her parents Ibrahim and Hatun and was also recently certified as the second-smallest adult human alive by the Guiness Book of Records. The only adult she is taller than is Nepalese man Khagendra Thapa Magar who at 25.8 inches is the world's smallest person. 'There were no problems in my pregnancy with her and I gave birth naturally,' said her mother Hatun.