Question

what is the observations of selecting cells by using the mouse
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Answer 1

Answer:

When you open the Workbook Designer, the cell in the upper left corner has a dark border around it, marking it as the active cell. Formula One for Java always places data entered in the active cell. When you select a cell by clicking on it with the mouse or by navigating to it using the keyboard, you make that cell active.

The active cell can be part of a selection of cells. When more than one cell is selected, the selection is called a range of cells. The active cell can move within the range. You may select more than one range of cells (non-adjacent) on a worksheet. Many operations require one or more cells to be selected.

The following illustration shows three types of cell selections.