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GATE Computer Science (CS) 2021 Shift 2 Solved Paper

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Question : 22

Total: 65

Let L₁ be a regular language and L₂ be a context-free language. Which of the following languages is/are context-free?

L₁ ∩ L̅₂
L₁ ∪ (L₂ ∪ L̅₂)
¯
L
1
∪
¯
¯
L
2
(L₁∩ L₂) ∪ (L̅₁ ∩ L₂)

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