Where do I do that?

"T. Valko" wrote in message
...
Try temporarily setting calculation to manual. After the text numbers are
converted to numeric numbers reset calculation to automatic.

--
Biff
Microsoft Excel MVP


"Brian" wrote in message
...
Yes, I did enter the actual model number, and I didn't hit
ctrl+shift+enter for array formula.

I think i know what the issue may be, the serial numbers are stored as
text, and when I tried to convert them to numbers, it takes 5 seconds for
every cell?!?!


"T. Valko" wrote in message
...
You have to change "Model1" to whatever the actual model name is!

Also, did you array enter the formula?

Array entered** :
** array formulas need to be entered using the key combination of
CTRL,SHIFT,ENTER (not just ENTER)


--
Biff
Microsoft Excel MVP


"Brian" wrote in message
...
igorek, thanks, i would use a pivot table, but i don't know how :(

T. Valko, thank you.
Can i changed that to:

=COUNT(1/FREQUENCY(IF(A2:A7024="Model1",B2:B7024),B2:B7024) )

Which represents the range of the data columns, but it gives me 0?

"Brian" wrote in message
...
Howdy All,

I have a workbook that contains service data for units.

Column A = Model Name (alpha) 87 model names that repeat throughout
the column
Column B = Serial Number (numeric), unique number that repeats
throughout the column
Column C = Service Hours
Column D = Service Req Number

Model Name appears many times in column A
Serial Number appears many times in column b.

I want to determine how many of each Model Number I have with a unique
Serial Number.
But each Model Name and Serial Number can occur many times in their
respective columns if there have been multiple Service Requests.


Thanks,
Brian