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MCQ

RR* can be expressed in which of the forms:

R+

R-

R+ U R-

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Regular expression are

Type 0 language

Type 1 language

Type 2 language

Type 3 language

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MCQ

Which of the following statement is correct?

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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A language is regular if and only if

accepted by DFA

accepted by PDA

accepted by LBA

accepted by Turing machine

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Which of the following pairs of regular expressions are equivalent?

1(01)* and (10)*1

x (xx)* and (xx)*x

x^+ and x^+ x^(*+)

All of the mentioned

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Regular expressions are closed under

Union

Intersection

Kleen star

All of the mentioned

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