Hey All,
I need ONE FORMULA to be able to solve a problem that I have to find a product and color of product, and count it once if it shows up once in a span of 3 months but not count it if it shows up in subsequent months.
Now I can do this with a helper column easily but I am trying to find a way to do it without one in one formula.
Attached is a workbook: Book1.xlsx
Thanks !!!
Image too!!!
Untitled.jpg
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