Hi all,

I have a data frame that has the columns OFB1, OFB2, OFB3,... OFB10.

How do I select the first 8 columns efficiently without typing each and
every one of them. i.e. I want something like:

a<-data.frame(initial_data$OFB1-10) #i know this is wrong, what would be
the correct syntax?

Thanks,
Sachin

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