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Ken Wright
 
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http://www.mcgimpsey.com/excel/formulae/doubleneg.html

--
Regards
Ken....................... Microsoft MVP - Excel
Sys Spec - Win XP Pro / XL 97/00/02/03

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It's easier to beg forgiveness than ask permission :-)
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"rita" wrote in message
...
Thank you boys and it worked a treat, but can you explain why you inserted
"--" in the formula? What is its function in the array?
Thanks


"Nick Hodge" wrote:

Rita

If the data is in A1:C6, for example, the following will sum the data in

C
where A="b" and B="yes"

=SUMPRODUCT(--(A1:A6="b"),--(B1:B6="yes"),(C1:C6))

--
HTH
Nick Hodge
Microsoft MVP - Excel
Southampton, England
HIS


"rita" wrote in message
...
I want to do a sumif but using 2 criterias which appear in 2 separate
columns
within the worksheet.

a yes 15000
a no 16000
a yes 20000
a no 30000
b yes 40000
b yes 50000

In the table above, I need to know the sum of column c if I choose a
criteria found in column a and column b together.
Can you help?
Thanks
Rita







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