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Theory-of-Computation
December 6, 2023
Theory-of-Computation
December 6, 2023
Theory-of-Computation
December 6, 2023
Theory-of-Computation
December 6, 2023

GATE 1996

Question 33

If L1 and L2 are context free languages and R a regular set, one of the languages below is not necessarily a context free language. Which one?

A
L1, L2
B
L1 ∩ L2
C
L1 ∩ R
D
L1 ∪ L2
Question 33 Explanation: 
Context free languages are not closed under intersection.
Correct Answer: B
Question 33 Explanation: 
Context free languages are not closed under intersection.

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