The easiest way is to highlight all the data columns, Sort by your number
list, and delete the duplicates. Or Autofilter for each value, right click
and delete the duplicates. If this is too large of a list to do manually,
you can create a fiormula in a new column:
1. After sorting, in the 2nd row that contains data in the new column,
create the follwoing formula:
=IF(A2=A3,"Y","N")
2. You iwll have to change "A" to the column letter containing your list.
The numbers in this formula assumes that Row1 is the header, and Row 2 starts
the data. Once entered, drag down to fill the formula in on the remaining
rows.
3. Autofilter the sheet by the "new column" you created for "Y".
Highlight all the "Y" rows, right click and delete.
4. Remove the filter and delete the formula column.
HTH