I'm posting one puzzle, riddle, math, or statistical problem a day. Try to answer each one and post your answers in the comments section. I'll post the answer the next day. Even if you have the same answer as someone else, feel free to put up your answer, too!
Tuesday, October 21, 2008
A Person Has Two
He has one and a person has two, a citizen has three and a human being has four, a personality has five and an inhabitant of earth has six. What am I?