The question, as stated, cannot be answered because there are only 26 = 64 combinations.
The order of the numbers in a combination does make a difference so 134 is the same as 143 or 413 etc.
There are
1 combinations each of 0 and 6 of the numbers,
6 combinations of 1 or 5 numbers,
15 combinations of 2 or 4 numbers, and
20 combinations of 3 numbers.
The list includes the null combination - that is the combination consisting of none of the numbers.
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720
720 permutations (the arrangement matters) 120 combinations (the arrangement doesn't matter)
Well, to calculate this you must do: 1X2X3X4X5X6=720. So there are 720 different combinations.
The LCM is 720.
The LCM is 720.