Need formula creation
 

Hi

I need help with formula creation. I'd like to look and find number in
column A and B for duplicate numbers, then show its duplicate value or number
in colum C. Please see below example. Thanks

A B C
101 $10
101 $10 1
102 $20
103 $30
103 $30 2
103 $30
104 $40

Need formula creation
 

On May 13, 11:54*am, Soth wrote:
Hi

I need help with formula creation. *I'd like to look and find number in
column A and B for duplicate numbers, then show its duplicate value or number
in colum C. Please see below example. *Thanks

A * * * * * * *B * * * * * * C
101 * * * * * $10
101 * * * * * $10 * * * * 1
102 * * * * * $20
103 * * * * * $30 * * * *
103 * * * * * $30 * * * * 2 *
103 * * * * * $30
104 * * * * * $40

In C2, try this - then fill down.

=IF(COUNTIF($A$1:A2,A2)=1,"",1+MAX($C$1:C1))