I'd like to count the distinct number of colors given in two non-adjacent columns. In the attached example, the answer should be 7. It would need to skip blanks, and not be based on the unique function (in case a colleague using Excel 2016 has to use the workbook). I've been grappling with this since 11 am today and am out of ideas/have tried everything I could find. Anyone have a solid lead?
Thanks in advance.
J.
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