GATE 2017 CE (CE1) – Question 3

General Aptitude · Analytical Aptitude: Logical Reasoning, Deduction and Analogy · 1 mark · Multiple choice

All benches are beds. No bed is a bulb. Some bulbs are lamps. Which can be inferred? (i) Some beds are lamps. (ii) Some lamps are beds.

Only i
Only ii
Both i and ii
Neither i nor ii

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Show answer and explanation

Correct answer: (D) Neither i nor ii

Explanation

Beds are disjoint from bulbs, while only some bulbs are known to be lamps. Nothing requires any lamp outside that bulb subset to be a bed. A model with all beds disjoint from all lamps satisfies every premise and makes both conclusions false. Neither conclusion is necessary, so D.

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