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QUESTION
I know how to do list Validations for a regular list but I don't know the function to use for a list that had duplication's.
I need help with Module 8 Case 4 in Excel. I know how to do list Validations for a regular list but I don't know the function to use for a list that had duplication's. Also, I'm confused by question 4: A-E. As well as creating a defined name. Please help!
