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There are more than ________ packages on CRAN that have been developed by users and programmers around the world.

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There are more than ________ packages on CRAN that have been developed by users and programmers around the world.

(a) 40

(b) 400

(c) 4000

(d) 40000

I have been asked this question by my college professor while I was bunking the class.

I'm obligated to ask this question of History of R in section History, Overview and Getting Started of R Programming

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The correct choice is (c) 4000

To explain I would say: There are more than 4000 packages on CRAN. A package bundles together code, data, documentation, and tests, and is easy to share with others. As of January 2015, there were over 4000 packages available on the Comprehensive R Archive Network, or CRAN, the public clearing house for R packages.

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