MS Excel
If you need to remove only the formatting done in a range (numbers and formula typed there should not be removed), you must

From Edit menu choose Clear and then Formats
Click on Remove Formatting tool on Standard Toolbar
Double click the Format Painter and then press Esc key in keyboard
From Edit menu choose Delete

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MS Excel
The autofill feature

Applies a boarder around the selected cells
Automatically adds range of cell values
All of the listed here
Extends a sequential series of data

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