Which of the following options is not available in Paste Special dialog box?

The Paste Special dialog box in Excel allows users to perform arithmetic operations such as Add, Subtract, and Multiply when pasting data. These options are available under the 'Operation' section of the dialog. However, mathematical functions like 'Divide' and 'SQRT' are not available in the Paste Special dialog. 'Divide' is not listed as an operation, and 'SQRT' is a function used in formulas, not in the Paste Special options. Therefore, the option 'SQRT' is not available in the Paste Special dialog box, making it the correct choice for the question.