There are 51C6 = 51*50*49*48*47*46/(6*5*4*3*2*1) = 18,009,460 combinations.
Chat with our AI personalities
There are 53*52*51*50*49*48/(6*5*4*3*2*1) = 22,957,480 combinations. And you must be joking if you think I am going to list them!
About 13million,
677
36C6 = 1947792
If the numbers can be repeated and the numbers are 0-9 then there are 1000 different combinations.