if the colum A and B combinations are unique, you could also use:

=SUMPRODUCT(C1:C10*(M4&N4=A1:A10&B1:B10))

Regards,
KL

"cmart02" wrote in message
...
Hi,

YOu can do this:

=INDEX(ColumnC,MATCH(M1&N1,ColumnA&ColumnB,0),1)

Now, press CTRL+SHIFT+ENTER and it is done.

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Regards
Robert
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