In a certain programming language, the regular expression /\b99\b/ matches “99” and “99a” but not “299”, “$99” and “ _99”. From the information presented, what is included in the set of characters that form a word for that programming language ?

Question

Answer

a.  “2”, “$”, “_”.

Answer

b.  Numerical Characters, 9, Space symbol

Answer

c.  Numerical Characters and “a”

Answer

d.  Alphabetical Characters

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In a certain programming language, the regular expression /\b99\b/ matches “99” ...

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