When you type a seven-or-ten-digit phone number into an Excel cell that uses the phone number format, Excel will automatically change the way the number looks so that it appears as a phone number ...

However, Excel's random number functions are volatile, meaning they change constantly. In this article, I'll show you how to generate and fix random numbers and remove duplicates.

Microsoft Excel depends on data that’s stored correctly. If you receive text values that should be real numbers, use one of these methods to get you back to the real work.