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Excel's UNIQUE function can't skip columns—unless you use this trick

Nest CHOOSECOLS inside UNIQUE to extract non-adjacent columns, and use INDIRECT for interactive header dropdowns.
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Excel formulas: The most popular functions and tools, with examples

Excel has over 475 formulas in its Functions Library, from simple mathematics to very complex statistical, logical, and engineering tasks such as IF statements (one of our perennial favorite stories); ...
CCM

Excel IF, AND, OR, and NOT functions

This article will explain how to use the conditional functions IF, AND, OR and NOT on Microsoft Excel. Each of these functions can be used as part of a formula in a cell to compare data samples in any ...

Build Faster Excel Workflows Using FILTER, IFS, XLOOKUP, and LET for Real-World Data

Learn the difference between Excel COUNT and COUNTA, plus TEXTBEFORE and TEXTAFTER tricks, so you clean text and totals with ...