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The way you get this answer is 5 times 4 times 3 if there are no repeats.
That is mathematically speaking the number of Permutations of 3 from 5. The number of mathematical Combinations (where order doesn't matter, ie groupings) of 3 from 5 is 10.
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120 ABCDE , there are 120 ways these five letters can be rearranged.
4
6
Four combinations: tam ham mat hat Hope it helps (:!
Starting with three different letters, six two-letter combinations can be made, if the order of the two letters is important. Only three combinations can be made if the order of the two letters is not important. Example: ABC AB AC BA BC CA CB - six variations But if (for your purposes) BA is the same as AB, Then there are only three: AB AC BC