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Regular expressions are closed under

Union

Intersection

Kleen star

All of the mentioned

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MCQ

Which of the following pairs of regular expressions are equivalent?

1(01)* and (10)*1

x (xx)* and (xx)*x

x⁺ and x⁺ x^(*+)

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MCQ

Which of the following is right?

A Context free language can be accepted by a deterministic PDA

union of 2 CFLs is context free

The intersection of two CFLs is context free

The complement of CFLs is context free

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MCQ

Number of states of FSM required to simulate behaviour of a computer with a memory capable of storing

m x 2^n

2^mn

2^(m+n)

All of the mentioned

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MCQ

?L is equivalent to

L? & ?

? & L

L & L

? & L

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How many strings of length less than 4 contains the language described by the regular expression (x+y)*y(a+ab)*?

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Reqular Expressions

Finite Automata

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Regular and context free languages

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Reqular Expressions

Finite Automata

Context Free Grammars

Push Down Automata

Regular and context free languages

Pumping Lemma

Turning Machine

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