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Question

Which one of the following statement is false?

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.

Answer: (d).Context-free languages are closed under Kleene closure.

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Q. Which one of the following statement is false?

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