If R is a regular language and L is some language and L U R is a-04655
If R is a regular language and L is some language, and L U R is a regular language, then L must be a regular language.
This multiple choice question (MCQ) is related to the book/course
vu cs402 Theory of Automata.
It can also be found in
vu cs402 Final Term - Quiz No.8.
