Question

    In each question below are given three statements

    followed by three conclusions numbered I, II and III. 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 three given statements, disregarding commonly known facts.   Statements:               All computers are laptops. All monitors are laptops. All laptops are printers. Conclusions:            I. All computers are printers. II. All monitors are printers. III. Some printers are computers.
    A None follows Correct Answer Incorrect Answer
    B Only I and II follow Correct Answer Incorrect Answer
    C Only II and III follow Correct Answer Incorrect Answer
    D All follows. Correct Answer Incorrect Answer

    Solution

    All computers are laptops. (A) + All laptops are printers(A) = All computers are printers(A). Hence, conclusion I will follow. All monitors are laptops (A) + All laptops are printers(A) =  All monitors are printers. Hence, conclusion II will also follow. All computers are printers(A) ⇒ conversion ⇒ Some printers are computer (I). Hence, conclusion III will also follow.

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