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GATE CS: Theory of Computation previous year questions

36 real GATE CS questions on Theory of Computation from 2022–2026, with the official answer to each. Try them here, or practise this topic free on Student AI Hub with instant checking and your score.

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Theory of Computation in GATE at a glance

Questions
36
1-mark / 2-mark
15 / 21
Numerical (NAT)
5
Multiple select (MSQ)
18

Questions per year: 2026: 7 · 2025: 10 · 2024: 8 · 2023: 6 · 2022: 5.

Theory of Computation questions

Each question is shown exactly as in the official paper. Tap “Show answer” to check yourself.

GATE 2026 Set 1 · Q.25 · 1 mark · MSQ

GATE CS Theory of Computation question, GATE 2026 Q.25
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Answer: A, B, C · see the full paper

GATE 2026 Set 1 · Q.26 · 1 mark · MSQ

GATE CS Theory of Computation question, GATE 2026 Q.26
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Answer: B, D · see the full paper

GATE 2026 Set 1 · Q.51 · 2 marks · MSQ

GATE CS Theory of Computation question, GATE 2026 Q.51
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Answer: C · see the full paper

GATE 2026 Set 1 · Q.52 · 2 marks · MSQ

GATE CS Theory of Computation question, GATE 2026 Q.52
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Answer: B, D · see the full paper

GATE 2026 Set 2 · Q.13 · 1 mark · MCQ

GATE CS Theory of Computation question, GATE 2026 Q.13
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Answer: D · see the full paper

GATE 2026 Set 2 · Q.47 · 2 marks · MSQ

GATE CS Theory of Computation question, GATE 2026 Q.47
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Answer: C, D · see the full paper

GATE 2026 Set 2 · Q.48 · 2 marks · MSQ

GATE CS Theory of Computation question, GATE 2026 Q.48
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Answer: A, C, D · see the full paper

GATE 2025 Set 1 · Q.19 · 1 mark · MCQ

GATE CS Theory of Computation question, GATE 2025 Q.19
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Answer: A · see the full paper

GATE 2025 Set 1 · Q.28 · 1 mark · MSQ

GATE CS Theory of Computation question, GATE 2025 Q.28
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Answer: D · see the full paper

GATE 2025 Set 1 · Q.44 · 2 marks · MCQ

GATE CS Theory of Computation question, GATE 2025 Q.44
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Answer: C · see the full paper

GATE 2025 Set 1 · Q.45 · 2 marks · MCQ

GATE CS Theory of Computation question, GATE 2025 Q.45
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Answer: C · see the full paper

GATE 2025 Set 1 · Q.50 · 2 marks · MSQ

GATE CS Theory of Computation question, GATE 2025 Q.50
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Answer: C · see the full paper

GATE 2025 Set 2 · Q.24 · 1 mark · MCQ

GATE CS Theory of Computation question, GATE 2025 Q.24
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Answer: A · see the full paper

GATE 2025 Set 2 · Q.25 · 1 mark · MCQ

GATE CS Theory of Computation question, GATE 2025 Q.25
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Answer: D · see the full paper

GATE 2025 Set 2 · Q.30 · 1 mark · MSQ

GATE CS Theory of Computation question, GATE 2025 Q.30
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Answer: B, C · see the full paper

GATE 2025 Set 2 · Q.52 · 2 marks · MSQ

GATE CS Theory of Computation question, GATE 2025 Q.52
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Answer: A, C · see the full paper

GATE 2025 Set 2 · Q.60 · 2 marks · NAT

GATE CS Theory of Computation question, GATE 2025 Q.60
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Answer: 6 · see the full paper

GATE 2024 Set 1 · Q.23 · 1 mark · MSQ

GATE CS Theory of Computation question, GATE 2024 Q.23
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Answer: C, D · see the full paper

GATE 2024 Set 1 · Q.50 · 2 marks · MSQ

GATE CS Theory of Computation question, GATE 2024 Q.50
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Answer: B, C · see the full paper

GATE 2024 Set 1 · Q.59 · 2 marks · NAT

GATE CS Theory of Computation question, GATE 2024 Q.59
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Answer: 179 · see the full paper

GATE 2024 Set 1 · Q.61 · 2 marks · NAT

GATE CS Theory of Computation question, GATE 2024 Q.61
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Answer: 44 · see the full paper

GATE 2024 Set 2 · Q.22 · 1 mark · MCQ

GATE CS Theory of Computation question, GATE 2024 Q.22
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Answer: A · see the full paper

GATE 2024 Set 2 · Q.41 · 2 marks · MCQ

GATE CS Theory of Computation question, GATE 2024 Q.41
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Answer: B · see the full paper

GATE 2024 Set 2 · Q.52 · 2 marks · MSQ

GATE CS Theory of Computation question, GATE 2024 Q.52
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Answer: B, C · see the full paper

GATE 2024 Set 2 · Q.62 · 2 marks · NAT

GATE CS Theory of Computation question, GATE 2024 Q.62
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Answer: 15 · see the full paper

GATE 2023 · Q.14 · 1 mark · MCQ

GATE CS Theory of Computation question, GATE 2023 Q.14
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Answer: C · see the full paper

GATE 2023 · Q.19 · 1 mark · MCQ

GATE CS Theory of Computation question, GATE 2023 Q.19
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Answer: C · see the full paper

GATE 2023 · Q.24 · 1 mark · MSQ

GATE CS Theory of Computation question, GATE 2023 Q.24
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Answer: A, C, D · see the full paper

GATE 2023 · Q.39 · 2 marks · MCQ

GATE CS Theory of Computation question, GATE 2023 Q.39
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Answer: B · see the full paper

GATE 2023 · Q.40 · 2 marks · MCQ

GATE CS Theory of Computation question, GATE 2023 Q.40
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Answer: A · see the full paper

GATE 2023 · Q.63 · 2 marks · NAT

GATE CS Theory of Computation question, GATE 2023 Q.63
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Answer: 4 · see the full paper

GATE 2022 · Q.12 · 1 mark · MCQ

GATE CS Theory of Computation question, GATE 2022 Q.12
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Answer: D · see the full paper

GATE 2022 · Q.23 · 1 mark · MSQ

GATE CS Theory of Computation question, GATE 2022 Q.23
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Answer: B, C, D · see the full paper

GATE 2022 · Q.46 · 2 marks · MSQ

GATE CS Theory of Computation question, GATE 2022 Q.46
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Answer: A, B, C · see the full paper

GATE 2022 · Q.47 · 2 marks · MSQ

GATE CS Theory of Computation question, GATE 2022 Q.47
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Answer: A, B, C · see the full paper

GATE 2022 · Q.48 · 2 marks · MSQ

GATE CS Theory of Computation question, GATE 2022 Q.48
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Answer: B, C, D · see the full paper

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