5 teams came from the North and South Carolina in 2011 (3 from NC, 2 from SC). There were actually 68 teams in this years tournament, so about 7.4% of the teams came from these two states.
If you are talking about the round of 64 (officially the second round), 7.8% of the teams from these two states made it (no team from a Carolina lost in the first round, although UNC-Ashville had to play to make it to the second round).
North Carolina has Three Teams in the NCAA Tournament Duke, North Carolina, UNC-Ashville
In 2012, there are (or were) four teams in the NCAA tournament: Duke, Florida State, North Carolina and North Carolina State. That is 4/68 or 5.9% of the tournament. Actually, in 2011, the seven teams that were in the NCAA tournament were: Virginia, North Carolina, Duke, Georgia Tech, Maryland, Boston College and Virginia Tech. That constituted 7/65 of the entire NCAA tournament or 10.8%
North Carolina.
Duke And North Carolina
Back in 1970 teams did not make the NCAA tournament unless they won their conference title. In 1970, South Carolina played in the Atlantic Coast Conference. North Carolina State beat South Carolina in the ACC tournament so they won the bid to go to the NCAA Championship Tournament.
North Carolina, Connecticut, Villinova, and Michigan State
NORTH CAROLINA TARHEELS - 100
5 Colleges - North Carolina North Carolina A & T State University Duke UNCC NC State Davidson
5 Colleges - North Carolina North Carolina A & T State University Duke UNCC NC State Davidson
North Carolina, Duke, NC State and Maryland.
In the 2013 NCAA men's basketball tournament, three states were represented by five teams each:California, North Carolina and Pennsylvania. Of these 15 teams, only LaSallefrom Pennsylvania and Duke from North Carolina made it to the Sweet 16.In contrast, the state of Florida had three teams in the Sweet 16: the University of Florida, the University of Miami and Florida Gulf Coast University.
North Carolina has 5, followed by New York, California, Kentucky, and Ohio at 4.