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Let A be a set which contains all non-regular languages. Then set B which is finite subset of A. Then will it be regular ?

I know that A is not recursive enumerable set (undecidable). So I wonder that if finite subset of undecidable set is a regular language or not.

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Your question doesn't make sense because of a category error. "Regular" is a property of sets of strings. A set of languages is a set of sets of strings, so it doesn't make sense to ask if it's regular.

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  • $\begingroup$ Accepted the fact. thanks! $\endgroup$ – Gaurav Tank Jul 28 at 20:48

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