In Microsoft Word 2019, you can add page numbers to your document by using the "Insert" tab. The "Insert" tab contains various options, including the "Page Number" option, which allows you to insert page numbers at different locations in your document.

1. The first and main part of the taskbar is the Start Button. Which is situated in the bottom left corner. It is also called Menu Button. Its structure also depends on the Windows version. It can be round, square, or rectangular.

2. All Programs, Folders and Settings are accessed with the help of the Start Button. From here you can find the program of your choice, run it and create its desktop shortcut.

The data remains the same after saving the file and turning off the computer when it is stored in secondary storage. Secondary storage devices, such as hard drives, solid-state drives, and optical discs, are non-volatile storage media. This means that they retain data even when the power is turned off. Unlike volatile memory (such as RAM), which loses its content when the computer is powered down, data stored in secondary storage remains intact until it is intentionally deleted or modified.

The elements of a chart in MS Excel 2010 include the following:-

1. Title: The title of the chart, which describes the topic or purpose of the chart.

2. Axis: Lines used to measure data on a chart.

3. Data Series: A group of data points on a chart.

4. Chart Area: The outer area of the chart, including the title, axes, and data series.

5. Legend: Labels used to identify data series on a chart.

6. Gridlines: Lines used to measure data on a chart.

7. Data Labels: Labels used to display the values of data points on a chart.

8. Data Table: A table used to display data from data series below the chart.