help with formula
 

A B C-count

10 A
10 A
10 A 2 Dup
20 B
20 C

There are duplicates numbers in Column A and B. How do you write a formula
to look up all fields in all columns for any possible duplicates place and
count the value in column c.

Many thanks,
Soth

help with formula
 

If your data starts from 2nd Row then use this formula in C3 cell
=IF(AND(B2<B4,COUNTIF($B$2:$B3,$B3)-11),COUNTIF($B$2:$B3,$B3)-1&" DUP","")

If your data starts from 1st Row then use this formula in C2 cell
=IF(AND(B1<B3,COUNTIF($B$1:$B2,$B2)-11),COUNTIF($B$1:$B2,$B2)-1&" DUP","")

Change the column reference B to A if required.

Remember to Click Yes, if this post helps!

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(Ms-Exl-Learner)
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"Soth" wrote:


A B C-count

10 A
10 A
10 A 2 Dup
20 B
20 C

There are duplicates numbers in Column A and B. How do you write a formula
to look up all fields in all columns for any possible duplicates place and
count the value in column c.

Many thanks,
Soth