Consider the following types of languages: L1: Regular, L2: Context-free, L3 : Recursive, L4 : Recursively enumerable. Which of the following is/are TRUE?I. L̅3 ∪ L4 is recursively enumerableII. L̅2 ∪ L3 is recursiveIII. L1* ∩ L2 is context-free IV. L1 ∪ L̅2 is context-free

Consider the following types of languages: L1: Regular, L2: Context-fr

1.	Consider the following types of languages: L1: Regular, L2: Context-free, L3 : Recursive, L4 : Recursively enumerable. Which of the following is/are TRUE?I. L̅3 ∪ L4 is recursively enumerableII. L̅2 ∪ L3 is recursiveIII. L1* ∩ L2 is context-free IV. L1 ∪ L̅2 is context-free
A.	I only
B.	I and III only
C.	I and IV only
D.	I, II and III only
Answer» E.

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Consider the following types of languages: L1: Regular, L2: Context-free, L3 : Recursive, L4 : Recursively enumerable. Which of the following is/are TRUE?I. L̅3 ∪ L4 is recursively enumerableII. L̅2 ∪ L3 is recursiveIII. L1* ∩ L2 is context-free IV. L1 ∪ L̅2 is context-free

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