In this example, the goal is to test if a given range contains duplicate values and return TRUE if duplicates exist and FALSE if not. This is essentially a counting problem and the solution is based on the COUNTIF function, which counts values in a range...Read more
The COUNTIFS function counts cells in a range when they meet one or more specific conditions. COUNTIFS is one of Excel's most widely used functions, and you find it in all kinds of spreadsheets that perform conditional counts based on dates, text, or numbers. Although common, COUNTIFS has a...Read more
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