There are 216 PERMUTATIONS, but there are only 56 combinations.The combination ABC is the same as ACB, BAC, BCA, CAB and CBA.
The 56 combinations are
6 combinations on 3 of the same.
30 combinations of 2 of one and 1 of another
and
20 combinations of 1 each.
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18
twenty-eight (28)
You could make 10*10*10*26*26*26 combinations, or 17576000 combinations.
8x7x6x5x4x3x2x1
200 different combinations. :)