=SUMPRODUCT(--(B1:B10="critaria 1"),--(C1:C10="critaria 2"),(A1:A10)) +
SUMPRODUCT(--(B1:B10="critaria 1"),--(C1:C10="critaria 3"),(A1:A10))

I hope you meant C1:C10 = critaria 2 OR critarais 3 in a given cell

In 2007
SUMPRODUCT(--(B1:B10="critaria 1"),--(C1:C10={"critaria 2","critaria
3"}),(A1:A10))

"freebee" wrote:

Hi, how to sum A1:A10 if B1:B10=critaria 1 and C1:c10=critaria 2 and critaria
3?
Thanks.