If Excel is not highlighting cells in the formula, enable 'Allow editing directly in cells' and 'Enable fill handle and cell drag-and-drop' in Excel options.

If you need to add a comma after the first word in each cell in Excel using the Replicate or Substitute function, read through this article.

Learn how to prevent costly Excel errors with our comprehensive formula checklist. Ensure accuracy and reliability in your spreadsheets ...

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.