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Under which of the following operation, NFA is not closed?

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Under which of the following operation, NFA is not closed?

(a) Negation

(b) Kleene

(c) Concatenation

(d) None of the mentioned

The question was posed to me in an internship interview.

This key question is from Applications of NFA in section Finite Automata of Automata Theory

1 Answer

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Best answer
Right answer is (d) None of the mentioned

Explanation: NFA is said to be closed under the following operations:

a) Union

b) Intersection

c) Concatenation

d) Kleene

e) Negation.

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