which option is not avail.able in Paste special dialogue box ?

Explanation
To use options from the Paste Special box, click Home > Paste > Paste Special.

Explanation
An arithmetic-logic unit (ALU) is the part of a computer processor (CPU) that carries out arithmetic and logic operations on the operands in computer instruction words.

Explanation
 F1 function key is used for opening help. Some of the top shortcut keys in Microsoft Word are: Ctrl + S: Save Ctrl + C: Copy Ctrl + X: Cut Ctrl + V: Paste Ctrl + Z: Undo Ctrl + Y: Redo Ctrl + B: Bold Ctrl + I: Italic Ctrl + U: Underline Ctrl + F: Find

Explanation
Ctrl +C is often used to copy highlighted text to the clipboard Ctrl + B =  Bold Ctrl+W : Close. Ctrl+A : Select all. Alt+Tab : Switch apps. Alt+F4 : Close apps. Win+D:  Show or hide the desktop. Win+left arrow or Win+right arrow : Snap windows. Win+Tab : Open the Task view.

Explanation
AutoSum is a fast, easy way to add up multiple values in Excel . You can access the AutoSum command from either the Home tab or the Formulas tab, but there is a keyboard shortcut that makes it even faster: Alt + =. 

Explanation
Will Facebook app change its name? No. Facebook, the social media app and service, will keep the same name. Only the umbrella company that oversees all the different apps is changing to Meta.  

Explanation
 Microsoft-XP is not an example of file compression Program used in windows operating system .

Explanation
Word art or  text art  is a form of art that includes text, forming words or phrases, as its main component; it is a combination of language and visual imagery.

Explanation
In 2003 and earlier versions - From Format Cells dialog box click on Merge Cells check box In 2007 and subsequent versions - Merge & Center icon on the Home ribbon.

Explanation
In Excel we can Find and Replace within the sheet or workbook.