Finding/Removing Duplicate Numbers In A Column ?

[Robert11]

Hi,

I have a long list of numbers in a column.

How would I determine if there are duplicates, and "flag" them ?

How would I remove all the duplicates in a single, perhaps, step ?

Thanks,
B.

 

[JE McGimpsey]

See

http://cpearson.com/excel/duplicat.htm

 

[Robert11]

Hello again,

Thank you very much for help.
Appreciate it.

Can't seem to get it to work, undoubtedly because I'm doing something really
dumb
with this. Relatively new user.

Would just like to highlight any and all duplicates.

Have my mumbers in Col B, from row 2 to row 483

Entered:
changed to Formula Is.

=if(countif($B$2:$B$483,B2)>1, true,false)

When trying to run it, I get an error msg. that says:

You may not use unions, intersections, or array constants for conditional
formatting criteria.

Any idea what I might be doing wrong ?

Thanks again, Bob

 

[Teethless mama]

Let's say your data in A2:A100
create a dummy column B, in B2=COUNTIF(A2:A100)>1
Auto Filter all the TRUE, then highlight all filter rows, then go to
Edit>Delete Rows,
then delete a dummy column

 

[Robert11]

Hi All,

Much thanks to everyone for all the help.

Got it to work now !

Bob