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Consider the class LA of all regular languages that contain only words of a length that is a multiple of 4, over the fixed three-letter
Consider the class LA of all regular languages that contain only words of a length that is a multiple of 4, over the fixed three-letter alphabet A={a,b,c}.
(a) Is LA countable?
(b) Is the class MA countable where MA consists of all languages over A that are not in LA?
(c) Is the class LA MA countable?
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