MS Excel
The shortcut key Ctrl + R is used in Excel to

Fill the selection with active cells to the right
Remove the cell contents of selected cells
Right align the content of cell
None of above

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MS Excel
How do you delete a column?

Select the column heading you want to delete and select Insert Delete from the menu
Select the row heading you want to delete and select Edit>Delete from the menu
Select the column heading you want to delete and select the Delete Row button on the standard toolbar
Right click the column heading you want to delete and select delete from the shortcut menu

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MS Excel
How do you insert a row?

Select the row heading where you want to insert the new row and click the Insert Row button on the standard toolbar
Select the row heading where you want to insert the new row and select Edit >Row from the menu
Right-click the row heading where you want to insert the new row and select Insert from the shortcut menu
All of the listed here

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