Hi Sridhar
You can use conditional formatting to find duplicates. select the first cell
in the column go to format -> conditional formatting. Select formulae is and
give this formulae (the cell selected is B2)
=countif($B$1:$B$100,B2)>1 and then select the format (lets say you set the
pattern to yellow). Now copy the cell and select the entire range and go for
paste special. paste the format in the selected range. The numbers which are
duplicated will be highlighed in yellow.
Regards
Raj