I have like 300 columns with 50 values in each and I want to find duplicates
accross these groups - e.g. number 23,5366 appears in group no. 23, in group
no. 45, in group no. 145 twice, etc. - and I needto get back the row
reference of these duplicates ( conditional highlighitng would sufice). How
can I achieve this?

Use COUNTIF() in the conditional format. Say your data is from A1 thru Z50.

Select A1 and set the conditional format t:

Formula Is:
=COUNTIF($A$1:$Z$50,A1)1 and pick a distinctive format

Copy A1 and pastespecial / formats from A1 thru Z50
--
Gary''s Student - gsnu200753


"Mac" wrote:

I have like 300 columns with 50 values in each and I want to find duplicates
accross these groups - e.g. number 23,5366 appears in group no. 23, in group
no. 45, in group no. 145 twice, etc. - and I needto get back the row
reference of these duplicates ( conditional highlighitng would sufice). How
can I achieve this?

Great, thanks! BUT: how do I make the 'criteria' condition of COUNTIF() to
update according to the row it appears in? Dragging or copying does not work,
the criteria remains A1, and I've got 10.000 rows to go....:-\ Is there
something like 'this' operator?

"Gary''s Student" wrote:

Use COUNTIF() in the conditional format. Say your data is from A1 thru Z50.

Select A1 and set the conditional format t:

Formula Is:
=COUNTIF($A$1:$Z$50,A1)1 and pick a distinctive format

Copy A1 and pastespecial / formats from A1 thru Z50
--
Gary''s Student - gsnu200753


"Mac" wrote:

I have like 300 columns with 50 values in each and I want to find duplicates
accross these groups - e.g. number 23,5366 appears in group no. 23, in group
no. 45, in group no. 145 twice, etc. - and I needto get back the row
reference of these duplicates ( conditional highlighitng would sufice). How
can I achieve this?