For the surname: BOROS

Full Name	Suburb	State	Year
Charles BOROS	Dean Park	Western Australia	1999
Jacob BOROS	at Westmead Childrens Hospital	Western Australia	2000
Josephine BOROS	Glenfield, formerly of Sydenham	Western Australia	1999
Lajos BOROS	Elanora Heights	Western Australia	2002
Leslie BOROS	Tregear	Western Australia	1999
Louise BOROS	Windsor	Western Australia	2000
Nicholas BOROS	Lalor Park	Western Australia	1975
Tony BOROS	Prospect	Western Australia	1995
Zdenko BOROS	Glenfield	Western Australia	1990
Janine BOROS		Victoria	2007
Wilhelmina BOROS		Western Australia	2007
The BOROS		Victoria	2008
Elizabeth BOROS		Victoria	2008
February BOROS		Western Australia	2009
Joseph BOROS		South Australia	2009
Ivan BOROS	Sydney	New South Wales	0
Birute BOROS	Hobart	Tasmania	0

According to the 2006 census conducted by the Australian Bureau of Statistics, the surname BOROS was ranked 37,838th most common surname in Australia, with 1,094 people. Question: What is the probability that two siblings have the same surname? Answer: The following graph shows the probability of two siblings having the same surname. The horizontal axis represents the probability of a surname being selected in the first place. The vertical axis represents the probability th