Question
Statements: Some silks are fibres. No fibre is a polyesters. Some polyesters are nylons. Conclusion:
I. Somesilks are not polyesters.
II. Some nylons are fibres.
III. Some polyesters are fibres.
In each of the questions below are given three statements followed by three conclusions numbered I, II andIII. You have to take the given statements to be true even if they seem to be at variance with commonly known facts. Read all the conclusions and then decide which of given conclusions logically follows from the givenstatements disregarding commonly known facts.
Solution
Some silks are fibres. (I) + No fibre is a polyesters. (E) Some silks are not polyesters. (O). Hence conclusion I follows. No fibre is a polyesters. (E) + Some polyesters are nylons. (E) Some nylons are not fibres. (O*). Hence conclusion II does not follow. No fibre is a polyesters. (E) Conversion Some polyesters are not fibres. (O). Hence conclusion III does not follow.
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