Question
Some tubes are not lamps. Some tubes may not be bulbs.
All wires may be tubes. In the given question, a set of conclusions is given. There are five options comprising of three or more statements. You need to choose the option that contains the set of statements from which the given conclusions logically follow.Solution
Some tubes are wires (I) + No wire is a lamp (E) ⇒ Some tubes are not lamps (O) Some bulbs are tubes (I) ⇒ Conversion ⇒ Some tubes are bulbs (I) ⇒ [Probable conclusion] ⇒ Some tubes may not be bulbs (O). Some tubes are wires (I) ⇒ Conversion ⇒ Some wires are tubes (I) ⇒ [Probable conclusion] ⇒ All wires may be tubes (A) Hence, option 2 is correct. By elimination method - By 1 and 4, no possibility case can be drawn between tube and bulb. Hence both are eliminated. By 3, no + no = no relation can be drawn between tubes and lamps. Hence it is eliminated. Hence answer is option 2.
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