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Question

R2D2 is a robot. R2D2 can repair aeroplanes. No other robot can repair aeroplanes.

Which of the following can be logically inferred from the above statements?

The correct answer is
R2D2 is a robot which can repair only aeroplanes.

Logical Inference: R2D2 Robot Abilities

We analyze the given statements to find the logical inference:

  • Premise 1: R2D2 is a robot.
  • Premise 2: R2D2 can repair aeroplanes.
  • Premise 3: No other robot can repair aeroplanes.

Deriving the Conclusion

Premise 3, stating that no other robot can repair aeroplanes, combined with Premise 2 (R2D2 can repair aeroplanes), establishes R2D2's uniqueness among robots for this specific ability. Option 3 states: "R2D2 is a robot which can repair only aeroplanes."

  • The first part, "R2D2 is a robot," directly follows from Premise 1.
  • The second part, "which can repair only aeroplanes," emphasizes R2D2's unique skill. Premises 2 and 3 confirm R2D2 has this skill, and it's exclusive to R2D2 among robots. Option 3 highlights this unique capability as the defining characteristic presented for R2D2 in the context of robots.

Therefore, R2D2's identity as a robot is exclusively associated with its ability to repair aeroplanes, as presented in Option 3.

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Important Questions from Logical Inferences

  1. Which of the following statements about languages and dialects is/are CORRECT?
  2. A person has a plan to climb a hill to reach the hilltop. She observes that there is a sudden rise in the water level in the stream coming down from the hill. From this she concludes that it must be raining heavily on the hilltop. Therefore, she should postpone her expedition to some later time.

    Which one or more of the following kinds of inference does this person’s reasoning involve as per the Nyāya view?
  3. Identify the instance(s) of inductive reasoning from the following options.
  4. A recent survey shows that 65% of tobacco users were advised to stop consuming tobacco. The survey also shows that 3 out of 10 tobacco users attempted to stop using tobacco.
    Based only on the information in the above passage, which one of the following options can be logically inferred with certainty?

  5. Students of all the departments of a college who have successfully completed the registration process are eligible to vote in the upcoming college elections. However, by the time the due date for registration was over, it was found that suprisingly none of the students from the Department of Human Sciences had completed the registration process. 
    Based only on the information provided above, which one of the following sets of statement(s) can be logically inferred with certainty?
    (i) All those students who would not be eligible to vote in the college elections would certainly belong to the Department of Human Sciences.
    (ii) None of the students from departments other than Human Sciences failed to complete the registration process within the due time.
    (iii) All the eligible voters would certainly be students who are not from the Department of Human Sciences.

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