#### finding unique numbers

```I have a column of numbers.  Some numbers may appear in the column more than
one time.  I need to find out the numbers that appear only one time.

For instance the column looks like this:

32
47
15
92
32
15
92

I need to find out that 47 is only used once.  How can I do this?

Thanks.

```
 0
nospam (155)
8/18/2005 1:32:33 PM
excel 39879 articles. 2 followers.

11 Replies
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```Assuming that A1:A7 contains your data, try...

B1, copied down:

=IF(ROWS(\$B\$1:B1)<=SUM(--(COUNTIF(\$A\$1:\$A\$7,\$A\$1:\$A\$7)=1)),INDEX(\$A\$1:\$A\$
7,SMALL(IF(COUNTIF(\$A\$1:\$A\$7,\$A\$1:\$A\$7)=1,ROW(\$A\$1:\$A\$7)-ROW(\$A\$1)+1),ROW
S(\$B\$1:B1))),"")

....confirmed with CONTROL+SHIFT+ENTER, not just ENTER.

Hope this helps!

In article <OEpRLl\$oFHA.496@TK2MSFTNGP10.phx.gbl>,
"Glenn" <nospam@yahoo.com> wrote:

> I have a column of numbers.  Some numbers may appear in the column more than
> one time.  I need to find out the numbers that appear only one time.
>
> For instance the column looks like this:
>
> 32
> 47
> 15
> 92
> 32
> 15
> 92
>
> I need to find out that 47 is only used once.  How can I do this?
>
> Thanks.
```
 0
domenic22 (716)
8/18/2005 1:57:27 PM
```Go to www.cpearson.com where Chip has lots of good stuff on locating unique
and duplicate items
best wishes
--
Bernard V Liengme
www.stfx.ca/people/bliengme
remove caps from email

"Glenn" <nospam@yahoo.com> wrote in message
news:OEpRLl\$oFHA.496@TK2MSFTNGP10.phx.gbl...
>I have a column of numbers.  Some numbers may appear in the column more
>than
> one time.  I need to find out the numbers that appear only one time.
>
> For instance the column looks like this:
>
> 32
> 47
> 15
> 92
> 32
> 15
> 92
>
> I need to find out that 47 is only used once.  How can I do this?
>
> Thanks.
>
>

```
 0
bliengme5824 (3040)
8/18/2005 1:58:23 PM
```I can't quite get this to work.  What do you mean by confirmed with
CONTROL+SHIFT+ENTER ?
"Domenic" <domenic22@sympatico.ca> wrote in message
news:domenic22-393C60.09572718082005@msnews.microsoft.com...
> Assuming that A1:A7 contains your data, try...
>
> B1, copied down:
>
> =IF(ROWS(\$B\$1:B1)<=SUM(--(COUNTIF(\$A\$1:\$A\$7,\$A\$1:\$A\$7)=1)),INDEX(\$A\$1:\$A\$
> 7,SMALL(IF(COUNTIF(\$A\$1:\$A\$7,\$A\$1:\$A\$7)=1,ROW(\$A\$1:\$A\$7)-ROW(\$A\$1)+1),ROW
> S(\$B\$1:B1))),"")
>
> ...confirmed with CONTROL+SHIFT+ENTER, not just ENTER.
>
> Hope this helps!
>
> In article <OEpRLl\$oFHA.496@TK2MSFTNGP10.phx.gbl>,
>  "Glenn" <nospam@yahoo.com> wrote:
>
> > I have a column of numbers.  Some numbers may appear in the column more
than
> > one time.  I need to find out the numbers that appear only one time.
> >
> > For instance the column looks like this:
> >
> > 32
> > 47
> > 15
> > 92
> > 32
> > 15
> > 92
> >
> > I need to find out that 47 is only used once.  How can I do this?
> >
> > Thanks.

```
 0
nospam (155)
8/18/2005 2:16:19 PM
```In article <uljup9\$oFHA.3364@tk2msftngp13.phx.gbl>,
"Glenn" <nospam@yahoo.com> wrote:

> I can't quite get this to work.  What do you mean by confirmed with
> CONTROL+SHIFT+ENTER ?

After typing the formula, instead of hitting just ENTER, hold the
CONTROL and SHIFT keys down, then while both keys are held down, hit the
ENTER key.  Excel will place braces around the formula indicating that
you've entered the formula correctly.
```
 0
domenic22 (716)
8/18/2005 2:42:45 PM
```Glenn wrote:
> I have a column of numbers.  Some numbers may appear in the column more than
> one time.  I need to find out the numbers that appear only one time.
>
> For instance the column looks like this:
>
> 32
> 47
> 15
> 92
> 32
> 15
> 92
>
> I need to find out that 47 is only used once.  How can I do this?
>
> Thanks.
>
>
=IF(COUNTIF(A:A,A1)=1,A1,"") filled down

Alan Beban
```
 0
unavailable (273)
8/18/2005 6:29:38 PM
```Domenic wrote...
>Assuming that A1:A7 contains your data, try...
>
>B1, copied down:
>
>=IF(ROWS(\$B\$1:B1)<=SUM(--(COUNTIF(\$A\$1:\$A\$7,\$A\$1:\$A\$7)=1)),INDEX(\$A\$1:\$A\$7,
>SMALL(IF(COUNTIF(\$A\$1:\$A\$7,\$A\$1:\$A\$7)=1,ROW(\$A\$1:\$A\$7)-ROW(\$A\$1)+1),
>ROWS(\$B\$1:B1))),"")
>
>...confirmed with CONTROL+SHIFT+ENTER, not just ENTER.
....

Bit redundant.

B1 could be simplified to =A1. As for B2, how about

=IF(OR(COUNTIF(B\$1:B1,A2:A\$7)=0),
INDEX(A2:A\$7,MATCH(0,COUNTIF(B\$1:B1,A2:A\$7),0)),"")

[I just figured out that both ranges could be anchored at one end,
floating at the other.]

```
 0
hrlngrv (1990)
8/18/2005 9:38:48 PM
```Alan Beban wrote...
....
>=IF(COUNTIF(A:A,A1)=1,A1,"") filled down

What, no plug for ArrayUniques?

```
 0
hrlngrv (1990)
8/18/2005 9:41:17 PM
```In article <1124401127.985383.136790@g14g2000cwa.googlegroups.com>,
"Harlan Grove" <hrlngrv@aol.com> wrote:

> B1 could be simplified to =A1.

I'm not quite sure what you mean by this.

> As for B2, how about
>
> =IF(OR(COUNTIF(B\$1:B1,A2:A\$7)=0),
> INDEX(A2:A\$7,MATCH(0,COUNTIF(B\$1:B1,A2:A\$7),0)),"")

Actually, the OP is looking for a list of values that occur once within
the range, not a list of unique values.

But I like the IF statement.  I'll have to make a note of it.

> [I just figured out that both ranges could be anchored at one end,
> floating at the other.]

Yep, makes an already expensive formula less so.
```
 0
domenic22 (716)
8/18/2005 11:06:17 PM
```Domenic wrote...
....
>Actually, the OP is looking for a list of values that occur once within
>the range, not a list of unique values.
....

Good point. All array formulas.

B1:
=IF(OR(COUNTIF(A1:A7,A1:A7)=1),
INDEX(A1:A7,MATCH(1,COUNTIF(A1:A7,A1:A7),0)),"")

B2:
=IF(SUMPRODUCT(--(COUNTIF(A\$1:A\$7,A\$1:A\$7)=1))>=ROWS(A\$1:A2),
INDEX(A\$1:A\$7,MATCH(1,COUNTIF(A\$1:A\$7,IF(COUNTIF(C\$1:C1,A\$1:A\$7)=0,
A\$1:A\$7)),0)),"")

B2 filled down as needed.

```
 0
hrlngrv (1990)
8/19/2005 12:20:11 AM
```In article <1124410811.117786.102770@g47g2000cwa.googlegroups.com>,
"Harlan Grove" <hrlngrv@aol.com> wrote:

> B2:
> =IF(SUMPRODUCT(--(COUNTIF(A\$1:A\$7,A\$1:A\$7)=1))>=ROWS(A\$1:A2),
> INDEX(A\$1:A\$7,MATCH(1,COUNTIF(A\$1:A\$7,IF(COUNTIF(C\$1:C1,A\$1:A\$7)=0,
> A\$1:A\$7)),0)),"")
>
> B2 filled down as needed.

Nice one, Harlan!

I take it that you meant...

COUNTIF(B\$1:B1,A\$1:A\$7)=0

....and maybe...

ROWS(B\$2:B2)
```
 0
domenic22 (716)
8/19/2005 1:52:22 PM
```Domenic wrote...
....
>I take it that you meant...
>
>COUNTIF(B\$1:B1,A\$1:A\$7)=0
>
>...and maybe...
>
>ROWS(B\$2:B2)

Yes. Oops!

```
 0
hrlngrv (1990)
8/19/2005 4:35:21 PM

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