Two girls appeared
at the registrar's office of a college. The receptionist handed each of them a
questionnaire to fill out. Each girl wrote the following facts on the
the last name Smith. Each was born on February 29, 1980. Each was born at 376 East 53d street,
New York City. Each
had a father named John Smith and a
mother named Gertrude Smith.
girls had completed the questionnaires they handed them to the registrar. The registrar read them and asked, "Are you
two girls sisters?”
replied, "Yes, we are.” Looking up from his papers, the registrar saw the two
girls and noticed, that they looked exactly alike. He said, "You are twins, aren’t you?”
promptly answered, "No”.
that all the answers they gave were true, and that they and that they had the
same mother and father, how do you account for the fact that they were not