[OASIS Issue Tracker] Commented: (OFFICE-2018) PERMUTATIONAspecification

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    [ http://tools.oasis-open.org/issues/browse/OFFICE-2018?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16735#action_16735 ] 

Andreas Guelzow  commented on OFFICE-2018:
------------------------------------------

SInce repetition is allowed, if f I have 3 objects (a,b,c) I can easily choose 5 of them in order: (a,b,a,c,a). Having the number of chosen limited to the total number of objects only makes sense if repetition is not allowed. 

> PERMUTATIONA specification
> --------------------------
>
>                 Key: OFFICE-2018
>                 URL: http://tools.oasis-open.org/issues/browse/OFFICE-2018
>             Project: OASIS Open Document Format for Office Applications (OpenDocument) TC
>          Issue Type: Bug
>          Components: OpenFormula
>    Affects Versions: ODF 1.2
>            Reporter: Andreas Guelzow 
>            Assignee: Andreas Guelzow 
>             Fix For: ODF 1.2
>
>
> We currently have:
> ---------------------------------------------------------------------------------------
> Summary: Returns the number of permutations for a given number of objects (repetition allowed).
> Syntax: PERMUTATIONA( Integer total ; Integer chosen )
> Returns: Number
> Constraints: total >= 0, 0 <= chosen <= total
> Semantics: Given total number of objects, return the number of permutations containing chosen
> number of objects, with repetition permitted.
>  PERMUTATIONA = Total^Chosen
> ---------------------------------------------------------------------------------------
> It is not clear what PERMUTAIONA(0,0) should be since 0^0 is undefined.

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