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GATE CS Theory of Computation questions

Practise Theory of Computation questions for GATE CS. Explore official PYQs and original subject-wise quizzes, check answers and view available solutions. Free, no sign-in.

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Official PYQ1989Theory of ComputationUndecidabilityMSQ · 1 mark
Which of the following problems are undecidable?
Official PYQ1989Theory of ComputationRegular and Context-free LanguagesMSQ · 1 mark
Context-free languages and regular languages are both closed under the operation (s) of :
Official PYQ1987Theory of ComputationTuring MachinesNAT · 1 mark
State whether the following statements are TRUE or FALSE: The problem as to whether a Turing machine MM accepts input ww is undecidable.
Official PYQ1987Theory of ComputationTuring MachinesNAT · 1 mark
State whether the following statement are TRUE or FALSE. AA is recursive if both AA and its complement are accepted by Turing machines.
Official PYQ1987Theory of ComputationContext-free Grammars and Push-down AutomataNAT · 1 mark
State whether the following statements are TRUE or FALSE: The intersection of two CFL's is also a CFL.
Official PYQ1987Theory of ComputationRegular Expressions and Finite AutomataNAT · 1 mark
State whether the following statements are TRUE or FALSE: A minimal DFA that is equivalent to an NDFA with nn nodes has always 2n2^{n} states.
Official PYQ1987Theory of ComputationRegular and Context-free LanguagesNAT · 1 mark
State whether the following statements are TRUE or FALSE: Regularity is preserved under the operation of string reversal.
Official PYQ1987Theory of ComputationRegular and Context-free LanguagesNAT · 1 mark
State whether the following statements are TRUE or FALSE: All subsets of regular sets are regular.
Official PYQ1987Theory of ComputationRegular and Context-free LanguagesMCQ · 1 mark
FORTRAN is a: