Excel, Data Validation

LhughesLhughes Just JoinedPosts: 17Registered
Hi, I am having a blank moment and hope someone can help asap!! So I am using Data Validation on an excel spreadsheet, I need to use data validation to ensure that only people aged between 30-50 are included, and then circle the ones that do not fall into this range however,I am not sure why excel is circling all other 255 cells, I just want the number range? Can someone advise please?

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