When the order of selection does not matter, the applicable concept is combination otherwise permutation would have been applicable.
Number of states = 11
States to be selected = 6
Therefore,
Number of ways of selecting 6 states from 11 states = 11C6 = 11!/(11-6)!6!= (11*10*9*8*7*6)/(1*2*3*4*5*6) = 462