in excel, how do I find which value doesn't have a pair?

C

curiousjackie

I have a list with many values that are listed twice, how do I find which
values DON'T have a pair?
 
D

Dave O

One way is to use the COUNTIF() function. Suppose your list runs from
A1:A10. In cell B1, enter
=COUNTIF($A$1:$A$10,A1)
and copy this down to B10. Any unique entry will show a result of 1.
 
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