Here's one alternative which serves your underlying intents:
=IF(SUMPRODUCT(--ISNUMBER(MATCH($AQ2:$BB2,{"ABC","DEF"},0))),"T","F ")
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Max
Singapore
http://savefile.com/projects/236895
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xdemechanik
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"Sara" wrote:
What is wrong with this formula
IF(COUNTIF($AQ2:$BB2,OR("ABC","DEF")),"T","F")