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Welcome to the Push Down Automata MCQs Page

Dive deep into the fascinating world of Push Down Automata with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Push Down Automata, 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 Push Down Automata, 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 Push Down Automata. 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 Push Down Automata. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Push Down Automata MCQs | Page 8 of 8

Q71.
State true or false:
S-> 0S1|01

Statement: No regular expression exists for the given grammar.
Discuss
Answer: (a).true
Q72.
For the given set of code, the grammar representing real numbers in Pascal has error in one of the six lines. Fetch the error.
(1) ->

(2) -> | epsilon

(3) -> | epsilon

(4) -> ā€˜Eā€™ | epsilon

(5) -> + | ā€“ | epsilon

(6) -> 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9
Discuss
Answer: (a).3
Discuss
Answer: (b).The root has a label which can be a terminal.
Q74.
Let G=(V, T, P, S)
where a production can be written as:

S->aAS|a

A->SbA|ba|SS

Which of the following string is produced by the grammar?
Discuss
Answer: (b).aabbaa
Q75.
Statement 1: Ambiguity is the property of grammar but not the language.
Statement 2: Same language can have more than one grammar.

Which of the following options are correct with respect to the given statements?
Discuss
Answer: (c).Both the statements are true
Q76.
Which of the following are non essential while simplifying a grammar?
Discuss
Answer: (d).None of the mentioned
Discuss
Answer: (a).L={a^ib^i|i>=0}
Q78.
The language L ={a^i2b^i|i>=0} is:
Discuss
Answer: (d).Two of the mentioned is correct
Q79.
L->rLt|tLr|t|r
The given grammar produces a language which is:
Discuss
Answer: (c).All odd palindromes
Page 8 of 8

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