Teaching UGC NET Mock Test Series 2025 (Paper 1 & 2) Theory of Computation Recursively Enumerable Sets, Turing Machines and Undecidability Turing Machines
Which of the following statements is/are FALSE?
1. For every non-deterministic Turing machine, there exists an equivalent deterministic Turing machine.
2. Turing recognizable languages are closed under union and complementation.
3. Turing decidable languages are closed under intersection and complementation.
4. Turing recognizable languages are closed under union and intersection.1
1 and 4 only
2
1 and 3 only
3
2 only
4
3 only