Numbers don't have "lower and upper cases". If you are referring to subscripts and superscripts (the number is typed just above or below the text, but in much smaller type), they are selectable using the Font menu.
Upper & Lower case letters are the naming rules on Microsoft Word 2007.
Italicised lower case b"b"
Lower case numbers are numbers that sit in line with the lower case letters. some of the numbers sit on the line as in 0, 1, 2, etc. Others drop below the line as in 4,7,9, etc. You can see examples of lower case numbers in some US coinage.
Microsoft
If you mean Microsoft word, just decrease the font size of the capital letter until it looks the same.
ctrl+shift+f3
Highlight all the text you want to change and press the Caps lock on/off, depending on whether you want it in lower/upper case.
If they have already been typed, in Microsoft Word and Powerpoint select them all and then press Shift-F3 and you can change between the different case options, including upper, lower and sentence case. In Excel, you need to use the LOWER function.
They are both official names of products so they should be written that way.
The lower case lxxv or upper case LXXV are both equivalent to 75
To change text from lower case to upper case, you can use various methods depending on the application. In word processors like Microsoft Word, you can highlight the text and use the "Change Case" feature (often found under the Format menu or as a shortcut like Shift + F3). In programming languages like Python, you can use the .upper() method on a string. For online tools, simply paste the text into a case converter and select the option to convert to upper case.
The word with is abbreviated as a lower case w followed by a slash.