The NOT function in Microsoft Excel is a built-in Logical function that reverses the logic of its argument. It ensures that one value is not equal to another. When given TRUE, NOT returns FALSE. When ...
How-To Geek on MSN
I stopped using the LET function—and my Excel sheets are better for it
Replacing LET formulas with helper columns made my Excel workbooks easier to audit, adapt, and troubleshoot.
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