1
GATE CSE 2014 Set 2
MCQ (Single Correct Answer)
+2
-0.6
Let $${L_1} = \left\{ {w \in \left\{ {0,1} \right\}{}^ * \left| w \right.} \right.$$ has at least as many occurrences of $$(110)'s$$ as $$(011)'s$$$$\left. \, \right\}$$. Let $${L_2} = \left\{ {w \in \left\{ {0,\,\,1} \right\}{}^ * \left| w \right.} \right.$$ has at least as many occurrences of $$(000)'s$$ as $$(111)'s$$$$\left. \, \right\}$$. Which one of the following is TRUE?
A
$${L_1}$$ is regular but not $${L_2}$$
B
$${L_2}$$ is regular but not $${L_1}$$
C
Both $${L_1}$$ and $${L_2}$$ are regular
D
Neither $${L_1}$$ nor $${L_2}$$ are regular
2
GATE CSE 2014 Set 1
MCQ (Single Correct Answer)
+2
-0.6
Which of the regular expression given below represent the following $$DFA?$$ GATE CSE 2014 Set 1 Theory of Computation - Finite Automata and Regular Language Question 49 English 1 GATE CSE 2014 Set 1 Theory of Computation - Finite Automata and Regular Language Question 49 English 2
A
$${\rm I}$$ and $${\rm II}$$ only
B
$${\rm I}$$ and $${\rm III}$$ only
C
$${\rm II}$$ and $${\rm III}$$ only
D
$${\rm I}$$, $${\rm II}$$ and $${\rm III}$$
3
GATE CSE 2013
MCQ (Single Correct Answer)
+2
-0.6
Consider the following languages
$${L_1} = \left\{ {{0^p}{1^q}{0^r}\left| {p,q,r \ge 0} \right.} \right\}$$
$${L_2} = \left\{ {{0^p}{1^q}{0^r}\left| {p,q,r \ge 0,p \ne r} \right.} \right\}$$

Which one of the following statements is FALSE?

A
$${L_2}$$ is context-free
B
$${L_1} \cap {L_2}$$ is context-free
C
Complement of $${L_2}$$ is recursive
D
Complement of $${L_1}$$ is context-free but not regular
4
GATE CSE 2012
MCQ (Single Correct Answer)
+2
-0.6
Consider the set of strings on $$\left\{ {0,1} \right\}$$ in which, every substring of $$3$$ symbols has at most two zeros. For example, $$001110$$ and $$011001$$ are in the language, but $$100010$$ is not. All strings of length less than $$3$$ are also in the language. A partially completed $$DFA$$ that accepts this language is shown below.

The missing arcs in the $$DFA$$ are

GATE CSE 2012 Theory of Computation - Finite Automata and Regular Language Question 51 English
A
GATE CSE 2012 Theory of Computation - Finite Automata and Regular Language Question 51 English Option 1
B
GATE CSE 2012 Theory of Computation - Finite Automata and Regular Language Question 51 English Option 2
C
GATE CSE 2012 Theory of Computation - Finite Automata and Regular Language Question 51 English Option 3
D
GATE CSE 2012 Theory of Computation - Finite Automata and Regular Language Question 51 English Option 4
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