Question

____ can be used to identify the existence of a matching pattern in a string

str_sub()
Str_extract()
str_detect()

Answer 1

str_detect()....

this is the answer to your question mate....

hope it helps u mate..
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Answer 2

Various questions in Data science can easily be answered by the students, if reference is appropriate for them to find the answers. You do not have to worry, simply consult with the text books and reference guides that are available for your benefit.

In order to make sure, that you can easily perform in the best possible manner while attempting the assignment questions or the exam questions.