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Which of the following code will drop the nth column?

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Which of the following code will drop the nth column?

(a) new <- old[-n,]

(b) new <- old[,-n]

(c) new <- old[,-c(i,j)]

(d) new <- subset(old,logical)

I got this question in an online interview.

The origin of the question is Commands topic in portion Commands, Packages, Visualizing Data and Linear Regression of R Programming

1 Answer

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Best answer
The correct answer is (a) new <- old[-n,]

Explanation: new <- old[-n,] drops the nth row.

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