Dave,

Your version can do away with the IF test

=SUM(((A1:A20=B1:B20)*(A1:A20<"")*(B1:B20<"")))

--

HTH

RP
(remove nothere from the email address if mailing direct)


"David Billigmeier" wrote in
message ...
Type this formula in the formula bar, and instead of just pushing "Enter"
to
commit it, push CTRL+SHIFT+ENTER.

Also, after looking at Bob's post I realize my formula isn't taking into
account blank cells, change to the following to fix (or just use Bob's
formula):

=SUM(IF(((A1:A20=B1:B20)*(A1:A20<"")*(B1:B20<"") ),1,0))

--
Regards,
Dave


"Lingyan Hu" wrote:

Shall I push (CTRL+SHIFT+ENTER) at the same time while entering the
formula?
I tried, but it doesn't seem to work.

"David Billigmeier" wrote:

Assume your Columns are A and B, and your rows go down to 20, Array
enter
this formula (CTRL+SHIFT+ENTER):

=SUM(IF(A1:A20=B1:B20,1,0))

Change the column and row references to fit your data.

--
Regards,
Dave


"Lingyan Hu" wrote:

Imagine there are two columns of cells, each row of two cells are
corresponding to each other. How to find out the number of rows
where the two
corresponding cells have the same value?