AIIMS Nagpur NO- 2020
Reasoning
Medium
Read the below statements taking them as true even if they seem to be at variance from the commonly known facts. Then choose the option that represents the conclusion that can be definitely drawn from these statements. Statements: (i) Some parrots are donkeys. (ii) All donkeys can sing.
Appeared in: AIIMS Nagpur NO- 2020
Explanation
- The question requires deducing a valid conclusion from two given premises.
- The first premise, 'Some parrots are donkeys,' establishes an intersection between the set of parrots and the set of donkeys.
- The second premise, 'All donkeys can sing,' establishes that the entire set of donkeys is a subset of things that can sing.
- Combining these, the parrots that are also donkeys must necessarily be able to sing. Therefore, it can be concluded that 'Some parrots can sing'.
Why Other Options Were Wrong
- Option A: This statement directly contradicts the second premise ('All donkeys can sing'). If all donkeys can sing, then at least some singers must be donkeys.
- Option B: This is an invalid conversion of the first premise. 'Some parrots are donkeys' does not imply that 'All donkeys are parrots'. It's possible that there are donkeys that are not parrots.
- Option C: This statement is directly contradicted by the logical conclusion we derived. We have proven that at least some parrots (the ones that are donkeys) can sing.
Related Visual
Clinical Relevance
- Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Syllogism and Logical Deduction as background academic context rather than a clinical decision trigger.
- This is a logical reasoning question and does not pertain to a clinical or nursing context.
- The skill tested is deductive reasoning, which is crucial in nursing for interpreting patient data, understanding cause-and-effect in pathophysiology, and making sound clinical judgments based on evidence.
- What if the first statement was 'All parrots are donkeys'? The conclusion would still be 'Some parrots can sing', but a stronger conclusion, 'All parrots can sing', would also be valid.
How to Approach the Question
- First, identify the two premises (statements) and the subjects in each (Parrots, Donkeys, Singers).
- Visualize the relationship between the subjects. Venn diagrams are an excellent tool for this. Draw circles to represent each group.
- Translate the first premise ('Some A are B') into an overlapping area between the 'A' and 'B' circles.
- Translate the second premise ('All B are C') by placing the entire 'B' circle inside the 'C' circle.
- Examine the combined diagram to see what new relationship is necessarily true. The area where 'A' and 'B' overlap must now also be inside 'C'.
- Formulate this new relationship as a conclusion ('Some A are C') and check if it matches any of the given options.
Concept Tested & Keywords
- Concept Tested: Syllogism and Logical Deduction
- Stem keywords: Some parrots are donkeys, All donkeys can sing, Conclusion, Statements
- Lead-in keywords: definitely drawn
- Negative lead-in flag: false
Question ID
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Practise the full AIIMS Nagpur NO- 2020
Attempt every question from this paper in a timed mock, then review the full solution for each one.
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