Question
Some plastics are not elastics. Some rubbers are not
fibres. Some elastics are not fibres. 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 plastics are fibres. (I) + No fibre is a elastics. (E) ⇒ Some plastics are not elastics. (0) No fibre is an elastics. (E) + Some elastics are rubbers. (I) ⇒ Some rubbers are not fibres. (O*). No fibre is a elastics. (E) ⇒ Conversion ⇒ Some elastics are not fibres. (O) Hence, option 2 is correct.
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