Series Numbering for Duplicate Entries?

D

deekay247

Hello everyone!

I have two columns, A and B. In column B I have 4527 rows filled with
single and duplicate names. In column A I would like to number them in
series so that it would follow the duplicates and single entries in
column B.

Column A | Column B
________________________________
1| 212
1| 212
1| 212
2| 212 ON ICE GREEN
3| 212 WHITE
4| 273 INDIGO
4| 273 INDIGO
5| ACQUA DI GIO
5| ACQUA DI GIO

Thanks, David
 
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