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Question

Choose the correct option:
Statement: If L1 and L2 are recursively ennumerable languages over S, then the following is/are recursively ennumerable.

a.

L1 U L2

b.

L2 ∩ L2

c.

both a and b

d.

None of the mentioned

Answer: (c).both a and b

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Q. Choose the correct option: Statement: If L1 and L2 are recursively ennumerable languages over S, then the following is/are recursively ennumerable.

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