Q. L and ~L are recursive enumerable then L is

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Q. Consider the production of the grammar:

S->AA A->aa A->bb

Describe the language specified by the production grammar.

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Q. Let R1 and R2 be regular sets defined over alphabet ∑ then

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Q. Which of the following strings can be obtained by the language L = { a^i b^2i / i≥ 1}?

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Q. Give a production grammar for the language L = {x/x ∈ (a,b)*, the number of a’s in x is multiple of 3}.

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Q. CFG is

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Q. The idea of an automation with a stack as auxiliary storage

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Q. Transition of finite automata is

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Q. A context free language is called ambiguous if

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Q. Which of the following identity is wrong?

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Q. Finite automata has

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Q. Finite automation and FSMS are used for

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Q. In computer, finite automata program can be stored using

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Q. A FA can be used for

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Q. The palindromes can’t be recognized by a FA because

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Q. Two – way finite automata has

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Q. A FA with deterministic transitions capability is known as

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Q. Limitation of a FA is

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Q. How many DFA’s exist with three states over the input alphabet {0,1}?

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Q. A FA with non – deterministic transitions capability is known as

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