The syntax for counting the number of unique values from a list of a column using the array formula is as follows: =SUM(IF(COUNTIF(<first cell from which you count the number of unique values>:<last ...

How to use the UNIQUE() function to return a count of unique values in Excel Your email has been sent The TechRepublic article How to create a sorted unique list in an Excel spreadsheet shows you how ...

Locating missing sequential numbers can be an arduous task when working with long lists of data. For example, you might want to locate business check numbers that haven't been logged into a balance ...

Click on the heading of the column you want to evaluate for duplicates. Click and drag from one heading to the next to select more than one column. Hold down the "Ctrl" key and click to select columns ...