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GATE | GATE CS 2021 | Set 1 | Question 11
Suppose that L1 is a regular language and L2 is a context-free language. Which one of the following languages is NOT necessarily context-free?
(A)
L1∩L2
(B)
L1⋅L2
(C)
L1−L2
(D)
L1∪L2
Answer
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