I am not great at excel formulas but have managed to cobble together an IF/AND string of formulas in order to convert a date in one column (col C) into an age range in another column (col D). However, if there is no date in col C, I want it to return N/A. Instead it is giving me “over 65” which is one of age ranges. What do I need to add to this or edit in order to obtain N/A for a blank cell?