Try...

=IF(I19=0,"NA",IF(I19=45, "y", "n"))

HTH

"Bert via OfficeKB.com" wrote:

I have tried to enter this formula and keep getting an error message.

if I19 =45,"y","n" or if I19 =0 then "NA".

No Matter how I enter this formula, I get an error message. Please help.
Thank you.

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