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GATE | GATE-CS-2014-(Set-1) | Question 45

Let L be a language and L\' be its complement. Which one of the following is NOT a viable possibility?

(A)

Neither L nor L\' is recursively enumerable (r.e.).

(B)

One of L and L\' is r.e. but not recursive; the other is not r.e.

(C)

Both L and L\' are r.e. but not recursive.

(D)

Both L and L\' are recursive

Answer

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