GATE Computer Science (CS) 2015 Shift 2 Solved Paper

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Question : 20 of 65
 
Marks: +1, -0
Consider the following statements.
I. The complement of every Turing decidable language is Turing decidable
II. There exists some language which is in NP but is not Turing decidable
III. If L is a language in NP, L is Turing decidable
Which of the above statements is/are true?
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