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 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
Select the row heading you want to delete and select Edit>Delete from the menu

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MS Excel
Rounding errors can occur

When you use addition and subtraction in a formula
When you use multiplication, division, or exponentiation in a formula
When you show the results of formulas with different decimal places that the calculated results
Because excel uses hidden decimal places in computation

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MS Excel
Which tool you will use to join some cells and place the content at the middle of joined cell?

From Format Cells dialog box click on Merge Cells check box
From Format Cells dialog box choose Merge and Center check box
From Format Cells dialog box select the Centered alignment
Click on Merge and Center tool on formatting toolbar

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