Question

    Statements: All clouds are earths. No

    earth is a planet. Conclusions: I. No cloud is a planet. II.  Some planets are not earths. 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 thetwo given statements, disregarding commonly known facts. Give Answer:
    A If only conclusion I follows Correct Answer Incorrect Answer
    B If only conclusion II follows Correct Answer Incorrect Answer
    C If either I or II follows Correct Answer Incorrect Answer
    D If both I and II follow. Correct Answer Incorrect Answer

    Solution

    All clouds are earths (A) + No earth is planet (E) ⇒ No cloud is a planet (E). Hence, conclusion I follows. No earth is planet (E) ⇒    Conversion ⇒ No planet is an earth ⇒ I.I. ⇒ Some planet are not earths (O). Hence,  conclusion II also follows.

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