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Welcome to the Regular Expressions MCQs Page

Dive deep into the fascinating world of Regular Expressions with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Regular Expressions, a crucial aspect of Formal Languages and Automata Theory. In this section, you will encounter a diverse range of MCQs that cover various aspects of Regular Expressions, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within Formal Languages and Automata Theory.

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Check out the MCQs below to embark on an enriching journey through Regular Expressions. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of Formal Languages and Automata Theory.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Regular Expressions. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Regular Expressions MCQs | Page 10 of 15

Q91.
Regular expression Φ* is equivalent to
Discuss
Answer: (a).ϵ
Q92.
a? is equivalent to
Discuss
Answer: (c).a+ϵ
Q93.
ϵL is equivalent to
Discuss
Answer: (c).L
Q94.
(a+b)* is equivalent to
Discuss
Answer: (b).(a*b*)*
Q95.
ΦL is equivalent to
Discuss
Answer: (a).
Q96.
Which of the following pair of regular expression are not equivalent?
Discuss
Answer: (c).(ab)* and a*b*
Q97.
Consider following regular expression

i) (a/b)*
ii) (a*/b*)*
iii) ((ϵ/a)b*)*

Which of the following statements is correct
Discuss
Answer: (d).all are equal
Q98.
What kind of expressions do we used for pattern matching?
Discuss
Answer: (c).Regular & Rational Expression
Q99.
Which of the following do Regexps do not find their use in?
Discuss
Answer: (d).none of the mentioned
Q100.
Which of the following languages have built in regexps support?
Discuss
Answer: (a).Perl

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