Want to delete or truncate numbers to the left in Excel? Learning how to remove numbers in Excel from the left is a neat trick to automate subtracting unwanted digits.

You can remove leading, trailing, and extra spaces between characters and numbers in Excel using TRIM(), SUBSTITUTE() or Find and Replace.

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.