grep question

[ann kok]

Hi all

how can I use grep to have the output as 60.40.2.x

eg:
60.40.2.5 
60.40.2.3 
60.40.2.7 

except 60.40.2x.x

eg:
60.40.20.5 
60.40.23.6
60.40.25.7

Thank you 

    


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