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dlarssonf
10 Mar 10 15:22
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Date Joined: 05 Mar 08
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Can any1 help with the following

I have a column of number with over a 1000's cells, each cell containing a particular 8 digit number. My problem is I only want to count each digit once, but the digit could appear numerous times in the column.

What is the formula for counting how many individual numbers there is but if it appears say 3 times, its only to be counted once

Many thanks for any help
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Report Bayes. March 10, 2010 3:31 PM GMT
Give me an example of the numbers and what exactly you want to count, and I'll have a quick go.
Report Compound Magic March 10, 2010 3:32 PM GMT
Try
=SUM(IF(FREQUENCY(A2:A10,A2:A10)0,1))
this must be entered as an array
change the cell references to match where your data is
Report Ghetto Joe March 10, 2010 3:32 PM GMT
If it's just numbers you can use frequency


=SUM(IF(FREQUENCY(A:A,A:A)0,1))

assuming your values are in column A
Report Triggster March 10, 2010 3:35 PM GMT
http://www.brainbell.com/tutorials/ms-office/excel/Count_Only_One_Instance_O... explains how
Report dlarssonf March 10, 2010 3:36 PM GMT
The numbers are in cell i10 to i1462.

number example = 100142627


Many Thanks.

I have being trying the formula's you have given and I am getting that circular reference error
Report Bayes. March 10, 2010 3:40 PM GMT
=SUM(IF(FREQUENCY(i10:i1462,i10:i1462),1,0)) should count the number of unique 8 digit numbers.
Report dlarssonf March 10, 2010 3:45 PM GMT
Thanks very much Bayes that worked perfectly!! Thanks also Ghetto Joe and Compound Magic!!

Cheers lads
Report dlarssonf March 10, 2010 3:45 PM GMT
Triggster 10 Mar 16:35
http://www.brainbell.com/tutorials/ms-office/excel/Count_Only_One_Instance_O... explains how


Excellent site Triggster, never knew it exsisted, going of to study it in depth now. cheers
Report Compound Magic March 10, 2010 4:03 PM GMT
Just for future reference ~

=SUM(IF(FREQUENCY(A2:A10,A2:A10)0,1))
the more than symbol did not show in front of the last 0 as typed
and should be inserted before the last 0
Report dlarssonf March 10, 2010 4:21 PM GMT
cheers for that compound magic!!!
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