If you wish to count the same or duplicate values in a column only once in Excel or the count of occurances of duplicate values, read this article.

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.

Creating a list of duplicate values that’s separate from the data source is easier than ever thanks to Microsoft Excel's FILTER() function.

Counting cells in Excel using the COUNT function is very easy, so if you want to learn how to do it, read this post to learn all about it.