GATE CE 2023 Set 1 — Question 6

MCQ+2 / -0.67EasyDeduction & InductionAnalytical AptitudeGeneral Aptitude

General Aptitude → Analytical Aptitude → Deduction & Induction

Last updated 5 September 2026

Question

Based only on the truth of the statement ‘Some humans are intelligent’, which one of the following options can be logically inferred with certainty ?

Correct answer (D) Some intelligent beings are humans. Solution The statement 'Some humans are intelligent' is a particular affirmative proposition (I-type). In categorical logic, 'Some A are B' is logically equivalent to 'Some B are A' through conversion. Therefore, 'Some intelligent beings are humans' is a certain inference. Turn this into a strength. Explore AI-powered practice and doubt support with Success Tracker.

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Correct answer (D) Some intelligent beings are humans. Solution The statement 'Some humans are intelligent' is a particular affirmative proposition (I-type). In categorical logic, 'Some A are B' is logically equivalent to 'Some B are A' through conversion. Therefore, 'Some intelligent beings are humans' is a certain inference.

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