Which one of the following statement is FALSE?
Posted: Thu Jul 14, 2022 9:05 am
a) Context-free languages are closed under union
b) Context-free languages are closed under concatenation
c) Context-free languages are closed under intersection
d) Context-free languages are closed under Kleene closure
b) Context-free languages are closed under concatenation
c) Context-free languages are closed under intersection
d) Context-free languages are closed under Kleene closure