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Question

The class of languages accepted by finite automata is closed under ________________.

A
Union
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B
Concatenation
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C
Kleene star
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D
All of these
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Solution

The correct option is D All of these

The class of languages accepted by finite automata is closed under

Automata theory is closely related to formal language theory. An automaton is a finite representation of a formal language that may be an infinite set.

Kleene star:-

The Kleene star is a unary operation, either on sets of strings or on sets of symbols or characters.

Concatenation:-

Appends a copy of the source string to the destination string. The terminating null character in destination is overwritten by the first character of source, and a null-character is included at the end of the new string formed by the concatenation of both in destination.

Union:-

A union is a special data type available in C that allows to store different data types in the same memory location.


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