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Timeline for letter combinations to make words

Current License: CC BY-SA 3.0

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Jun 17, 2020 at 9:04 history edited CommunityBot
Commonmark migration
May 7, 2013 at 20:14 comment added Peter Taylor @Griffin, you don't distinguish between them. That's the point.
May 7, 2013 at 15:15 comment added Howard @Griffin I do not understand what you mean by your remark concerning distinguishability. Why do we need it for this question? And as PeterTaylor said - it makes complete sense to assume combination with repetition in this context.
May 7, 2013 at 14:03 comment added Griffin Btw, combinations are defined on sets.
May 7, 2013 at 14:02 comment added Griffin How does one distinguish between {a,a} and {a,a} ?
May 7, 2013 at 13:32 comment added Peter Taylor @Griffin, why not? Mathematical literature tends to be careful enough to say "combinations without repetitions" or "combinations with repetitions", but in this context it seems reasonable to understand "combinations with repetitions" (and all four current answers do).
May 7, 2013 at 13:10 comment added Griffin Your combinations contain repeated characters (are not sets). I can't see how a combination of a bag makes sense.
May 7, 2013 at 8:09 history edited Howard CC BY-SA 3.0
added 15 characters in body
May 7, 2013 at 7:41 history edited Howard CC BY-SA 3.0
deleted 9 characters in body
May 6, 2013 at 22:41 comment added Peter Taylor @DavidCarraher, the spec doesn't ask for more than one answer. It uses a singular noun more than once.
May 6, 2013 at 21:02 comment added DavidC Your solution does not return all correct results. For example, you only list {O,P,S,T} for four letters. {A,L,E,S} and {A,T,E,S} are also correct answers.
May 6, 2013 at 15:51 history answered Howard CC BY-SA 3.0