Hello, I have 3 Google sheets (Sheet1, Sheet2 and Sheet3) with number values in column A, starting from cell A3. I would like a formula that writes in Sheet4 duplicate values extracted from the first three sheets. I found this formula applied to two sheets:
Formula:![]()
=ArrayFormula(UNIQUE(TRIM(FILTER({A3:A;Sheet2!A3:A};COUNTIF({A3:A;Sheet2!A3:A};{A3:A;Sheet2!A3:A})>1))))
But I would like the same formula applied to three sheets.
Thanks for helping me!
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