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Question

In each of the questions below are given three statements followed by three conclusions numbered I, II and III. 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.

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.

A Only I follows Correct Answer Incorrect Answer
B Only I and II follows Correct Answer Incorrect Answer
C Only I and III follows. Correct Answer Incorrect Answer
D Only II follows Correct Answer Incorrect Answer
E All follows Correct Answer Incorrect Answer

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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