How many combinations can be made from a 12 set string of letters and number that can be repeated and used more than once in any order. Ie- TD3GD3BK6K7T and would be different than T7K6KB3DG3DT or KKTT733DDGB6.
2026-03-27 02:36:09.1774578969
How many combinations are possible: English alphabet A-Z and digits 0-9 in a set of 12.
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Each character in the string can be any one of the (26+10) possible characters. So there are $36^{12}$ possible combinations.