The simplest way to do this is to use the VLOOKUP function.
VLOOKUP($A1, $B$1:$B$1000, 1, 0)
This will look up the value of cell A1 in the range B1:B1000. If it is found, it will return the value of the first column in the range (in this case there is only one column in the range). If the value is not found, it will return #N/A.
You would need to use this function on every cell in the range A1:A10000 to see which ones match. I would insert a column before A:A and use the function there (just be sure to adjust your formula appropriately). Sorting will bring the matches to the top.
A column chart.
A column chart.
Since you put this question in the Excel category, I will answer relative to what you can do with Excel. The quick way is to highlight the column of numbers and click on the Auto-Sum button.
Surface Chart
In Excel, B1 is a cell address where column B and row 1 meet.
In Excel 2003 and earlier, there are 256 columns, so the last column is IV. From Excel 2007 onwards, there are 16,384 columns, so the last column is XFD.
Columns are vertical in a spreadsheet.
Columns are identified by letters at the top of the column.
16,384 columns can be found in versions of Excel from version 2007 onwards. That is column XFD. If it is an earlier version the last column is IV and there are 256 columns.
To make changes to an entire column in excel, click on the column heading (letter at the top of the column) and make your desired changes.EXAMPLE (Make all text in column C align center):Click on the column "C" at the top of Column C. [This will highlight the entire column.]Click on the BOLD text formatting option. [You might need to click two or three times, if some text is bold and some is not.]Observe that all all text in Column C is bold.
column labels
XFD is the column label on the last column in a Microsoft Excel 2007 worksheet.
There is no best column in Excel. All columns are the same. If you are referring to the best fit, then that is based on the widest entry in a column being used to set the width of the column.
Columns are shifted to the right, from the column where the new one is being entered. There is no effect on any columns to the left of the new column.
Excel has only one type of column -- a vertical stack of cells.
to delete column B Columns("B:B").Delete Shift:=xlToLeft
The total number of columns in versions of Excel up to Excel 2003 is 256 columns. The total number of columns in Microsoft Excel 2007 and onwards is 16384. The total number of rows up to Excel 2003 is 65536. From Excel 2007 it is 1048576.