New Enroll in RBI Grade B New Batch - Starts on May 21

    Question

    In the given question, a set of conclusions is given. There are five options comprising of three or more statements. You need to choose the option that contains the set of statements from which the given conclusions logically follow.

    Some kangaroos may be giraffe. Some leopards may not be

    wolfs. Some kangaroos are leopards.
    A No leopard is a kangaroo. All kangaroos are wolfs. Some giraffes are leopards. Correct Answer Incorrect Answer
    B No leopard is kangaroo. Some kangaroos are wolfs. All giraffes are leopards Correct Answer Incorrect Answer
    C Some giraffes are leopards. Some kangaroos are wolfs. Some leopards are kangaroos. Correct Answer Incorrect Answer
    D No giraffe is a leopard. All leopards are kangaroos. All kangaroos are wolfs. Correct Answer Incorrect Answer
    E Both 1st and 3rd. Correct Answer Incorrect Answer

    Solution

    No giraffe is a leopard  (E) + All leopards are kangaroos (A) ⇒ Some kangaroos are not giraffe (O*) ⇒ [Probable conclusion] ⇒ Some kangaroos may be giraffes (I). All leopards are kangaroos (A) + All kangaroos are wolfs (A) ⇒ All leopards are wolfs (A) ⇒ I.I. ⇒ Some leopards are wolfs (I) ⇒ [Probable conclusion] ⇒ Some leopards may not be wolfs (O*). All leopards are kangaroos (A) ⇒ Conversion ⇒ Some kangaroos are leopards (I). Hence, option 4 is correct.

    Practice Next

    Relevant for Exams: