is there an autocomplete for numbers in excel?

[lblatter]

I am preparing a lengthy list which inlvoves social scurity numbers and would
like to know if I have typed in a duplicate without doing a search each and
every time I make an entry.

Is there any way to do this in Excel?

Thanks,

 

[Ragdyer]

Try this page of Chip Pearson:

http://www.cpearson.com/excel/NoDupEntry.htm