Thanks, I found that after I posted this.

thanks

"MartinW" wrote:

Hi,

Assuming your data is in A1:B100
put this in C1 and drag down

=SUMPRODUCT(($A$1:$A$100=A1)*($B$1:$B$100=B1))
adjust the ranges to suit

Any return greater than 1 will be a duplicate.

HTH
Martin


"pgarcia" wrote in message
...
Hello all,
I have two colums, one hads check number and the other has dollar amounts.
How can I find dup by first look at the check number then by dollar
amount?