Excel's basic formulas work fine for simple calculations, but they quickly become cumbersome when you're dealing with complex data analysis. You end up with nested functions that are hard to read, ...
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Excel's # symbol looks like a typo — it's actually one of the most useful things in the app
You can use Excel for years without ever noticing the # symbol, let alone understanding what it does. That changes when you inherit a workbook, spot a formula with a cell reference ending in #, and ...
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