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MMLU-Pro / 10418 / Let M be a single-tape, deterministic Turing machine with tape alphabet…

Problem

Answer published by the source. Consult the official source to check your work against its answer.

question

Let M be a single-tape, deterministic Turing machine with tape alphabet {blank,0,1}, and let C denote the (possibly infinite) computation of M starting with a blank tape. The input to each problem below is M, together with a positive integer n. Which of the following problems is (are) decidable?
I. The computation C lasts for at least n steps.
II. The computation C lasts for at least n steps, and M prints a 1 at some point after the nth step.
III. M scans at least n distinct tape squares during the computation C.

category

computer science

options

  1. III only
  2. II and III only
  3. Only when M prints a 1 at some point before the nth step.
  4. I only
  5. All are decidable
  6. I and II only
  7. None
  8. II only
  9. I, II, and III
  10. I and III only

src

ori_mmlu-college_computer_science

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Source and history

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