Which of the following sentences can be generated byS -> aS ...

MCQ

Which of the following sentences can be generated by

S -> aS | bA
A -> d | cA

bccdd

abbcca

abcabc

abcd

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MCQ

Given the following two languages: L1 = {anban|n > 0} L2 = {an b an bn + 1|n > 0} Which of the following is correct ?

L₁ is context free language and L₂ is not context free language

L₁ is not context free language and L₂ is context free language

Both L₁ and L₂ are context free languages

Both L₁ and L₂ are not context free languages

Discussion

MCQ

Which one of the following is FALSE?

There is a unique minimal DFA for every regular language

Every NFA can be converted to an equivalent PDA

Compliment of every context-free language is recursive

Every non-deterministic PDA can be converted to an equivalent deterministic PDA

Discussion

MCQ

The entity which generate Language is termed as:

Automata

Tokens

Grammer

Data

Discussion

MCQ

Let L = L1?L2, where L1 and L2 are languages as defined below:

L1 = {a^{m}b^{m}ca^{n}b^{n} | m, n >= 0 }
L2 = {a^{i}b^{j}c^{k} | i, j, k >= 0 }
Then L is

Not recursive

Regular

Context free but not regular

Recursively enumerable but not context free

Discussion

MCQ

Let L = {0ⁿ1ⁿ|n ? 0} be a context free language. Which of the following is correct ?

L` is context free and L^k is not context free for any k ? 1.

L` is not context free and L^k is not context free for any k ? 1

Both L` and L^k is for any k ? 1 are context free.

Both L` and L^k is for any k ? 1 are not context free

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Reqular Expressions

Finite Automata

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