MS Excel
What does COUNTA () function do?

Counts cells having alphabets
Counts non-empty cells
Counts empty cells
Counts cells having number

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

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