Type into any of the cells in your spreadsheet =Column(=COLUMN(F1:H5). Then press Enter, and the result would be 6,7, and 8. There are two other methods to use the Column function. Method one is ...
6. Click the "Column" drop-down menu to change to Column ... you may be greeted with a pop-up confirming this area of your spreadsheet. Select "Continue with the current selection" followed ...
6. Select "Unhide Columns" from the list. This will reveal all hidden columns, a feature especially helpful if you've hidden multiple columns throughout a large spreadsheet.