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If a set cannot contain repetition, what would be the proper term for a group of items that allowed repetition?

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    Similar question: [$A$ Set is a collection of well defined and distinct objects. What is a collection of well defined objects without being distinct called?](http://math.stackexchange.com/questions/140902/a-set-is-a-collection-of-well-defined-and-distinct-objects-what-is-a-collection)2012-10-19

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Multisets are sets which allow repetitions, but the order does not matter.

If you wish to allow repetitions and the order does matter, you are looking for a sequence.

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    I never heard that terminology; but then again I haven't really worked with multisets.2013-02-24