MS Excel
You can select a single range of cells by

Dragging over the desired cells
Pressing the Ctrl key while dragging over the desired cells
Clicking the upper-left cell in a group of cells and then pressing the Shift key while clicking the lower right cell in a group of cells
Pressing the Shift key and an arrow key

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MS Excel
The autofill feature

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

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