Question

    Statements :         All one are two.

    >                                All three are two.                                 All two are four. Conclusions:         I. All one are four. II. At least some three are four.  In each of the questions below are given some statements followed by some conclusions. You have to take the given statements to be true even, if they seem to be at variance from commonly known facts. Read all the conclusions and then decide which of the given conclusions logically follows from the given statements disregarding commonly known facts
    A If both conclusions I and II follow Correct Answer Incorrect Answer
    B If either conclusion I or II follows. Correct Answer Incorrect Answer
    C If only conclusion II follows. Correct Answer Incorrect Answer
    D If only conclusion I follows. Correct Answer Incorrect Answer

    Solution

    All one are two (A) + All two are four (A) ⇒ All one are four. Hence, conclusion I follows. All three are two (A) + All two are four (A) ⇒ All three are four (A) ⇒ conversion ⇒ Some three are four (I). Hence, conclusion II follows.

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