1. To permanently delete any file or folder in Windows, Shift + Delete + Enter is used.

Can be placed in a cell of Microsoft Excel.

- Number

- Text

- Formula

1. Using Ctrl + F opens the option of ‘Find and Replace’.

2. In Word, the shortcut key Ctrl + F is used to open the Find box.

3. Ctrl + F is used to find a document.

1. In MS Excel 2010, the address of the topmost cell is Al.

2. Microsoft Excel is a commercial spreadsheet application written and distributed by Microsoft for Microsoft Windows and Mac OS X.

3. Microsoft Excel is a spreadsheet tool capable of performing calculations, analyzing data, and integrating information from different programs.

1. Microsoft PowerPoint: This is the most popular slide show presentation software. It is easy to use and has many features that allow you to create engaging and informative slideshows.

2. Google Slides: It is a free online slideshow presentation software. It offers similar features to PowerPoint and can be used in any web browser.

3. LibreOffice Presentation: It is a free and open-source slideshow presentation software. It offers features similar to PowerPoint and Slides.

4. Adobe Presentation: It is a professional slide show presentation software. It has more advanced features than PowerPoint and Slides.

1. Icons are small pictures that represent a program, folder, or program function and are displayed in the user's user interface when they are double-clicked.

1. If you want to repeat the row/column on all pages while printing in MS Excel 2010 then you can use Print Titles.

1. Mail Merge is a facility in MS Word using multiple or different letters, invitation cards, and personal letters that can be sent to many people in a minimum time.

2. This feature is more useful in a situation when a user has to deliver a letter or invitation card to thousands of people.

3. We can understand mail merge with an example. Suppose we have to send a letter or card to 1000 different people with their names and addresses, in that case, we will have to copy and paste that letter 1000 times for all those people, and then a lot of time will be wasted. A database will be created which will contain the names, addresses and other information of all the recipients. This database file is in MS Excel or MS Access.