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If L is a regular language, then (((L’)r)’)* is:

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in Automata Theory by (51.1k points)
If L is a regular language, then (((L’)r)’)* is:

(a) regular

(b) non regular

(c) may be regular

(d) none of the mentioned

I got this question in my homework.

This key question is from Closure Properties under Boolean Operations topic in section Properties of Regular Languages of Automata Theory

1 Answer

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Best answer
Correct option is (a) regular

To explain I would say: If L is regular so is its complement, if L’ is regular so is its reverse, if (L’)^r is regular so is its Kleene.

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