zero
2008 is the first year, since teams began being seeded in 1979, that four #1 seeds made the Final Four. Those teams are North Carolina, Kansas, Memphis and UCLA.
This has happened once, in 2008.
four times the number
The number that is twenty-one times greater than four is eighty-four.
2008
#1
The lowest seeded team to make it all the way to the Final Four in the NCAA basketball tournament was an 11 seed and it happened four times:11 seeded LSU in 198611 seeded George Mason in 200611 seeded VCU in 201111 seeded Wichita State in 2013
2008 is the first year, since teams began being seeded in 1979, that four #1 seeds made the Final Four. Those teams are North Carolina, Kansas, Memphis and UCLA.
No, they all are still ranked as they originally seeded in their division.
George Mason was the 11th seed in 2006 and made it all the way to the Final Four. I don't know if that's the lowest seeded team to make it to the Elite Eight or Final Four though.http://a.espncdn.com/ncaatourney/brackets/2006Bracket.pdf
2 times
This has happened once, in 2008.
Kansas has won the Final Four 3 times. 2008,1988,and 1952.
Montana has never been in the Final Four.
It happened for the first time in 2008. To calculate the probability you'd need to know the probability of each number 1 seed winning each game, and that changes every year (and can't really be measured).
West Virginia has been to the Final Four 2 times: 1959 and 2010.
Murray State has never been in the Final Four.