Let's say the cells in question are A1 thru A20. In another cell enter:

=IF(OR(SUM(A1:A20)=0,SUM(A1:A20)=100),"Valid","Not Valid")

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Gary''s Student - gsnu200755


"Jane" wrote:

I want to validate that a sum of cells is 0 or 100. How do I do that?
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Jane