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Question

In each question below are given two statements followed by two conclusions numbered I and II. You have to take the two given statements to be true even if they seem to be at variance with commonly known facts and then decide which of the given conclusions logically follows from the two given statements, disregarding commonly known facts. Give Answer:

Statements: Some threads are needles.

                           Some needles are strings.

Conclusions: I. Some needles are not strings.

                       II. Some threads may be strings.

A if only conclusion I follows. Correct Answer Incorrect Answer
B if only conclusion II follows. Correct Answer Incorrect Answer
C if either conclusion I or II follows. Correct Answer Incorrect Answer
D if neither conclusion I nor II follows. Correct Answer Incorrect Answer
E if both conclusions I and II follow Correct Answer Incorrect Answer

Solution

Some needles are strings (I) ⇒ I.I. ⇒ No conclusion. Hence, conclusion I does not follow. Some threads are needles(I) + Some needles are strings(I) ⇒ Probable conclusion ⇒ Some threads may be strings(I). Hence, conclusion II follows.

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