COUNT function 2 Columns

[JAMES]

I have two columns of data, CATEGORY and NUMBER, and want
to be able to COUNT the number instances where CATEGORY =
X and NUMBER = Y.

I know how to use the COUNT function on each column, but
I don't know how to use it on two columns.

Thanks!

 

[Paul B]

James, how about something like this
=SUMPRODUCT((A2:A25="test")*(B2:B25=24))

--
Paul B
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[Ragdyer]

Say "Category" is column A, and "Number" is column B.

=SUMPRODUCT((A2:A100="X")*(B2:B100="Y"))

 

[JAMES]

Sorry, I should have said that both columns contain TEXT -
any ideas?

eg. two columns CATEGORY (A, B, C) and SIZE (small, med,
large). I want to count how many of a certain category
AND a certain size.

 

[Bob Phillips]

Same solution, just run two text comparisons.