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Home ‣ Logical Reasoning ‣ Logical Deduction See What Others Are Saying!
  • Question

  • Statements: All tigers are jungles. No jungle is bird. Some birds are rains.

    Conclusions:

    1. No rain is jungle.
    2. Some rains are jungles.
    3. No bird is tiger.


  • Options
  • A. Only I and II follow
  • B. Only III follows
  • C. Only either I or II, and III follow
  • D. All follow
  • E. None of these

  • Correct Answer
  • Only either I or II, and III follow 

    Explanation
    All tigers are jungles. No jungle is bird.

    Since both the premises are universal and one premise is negative, the conclusion must be universal negative (E-type) and should not contain the middle term.

    So, it follows that 'No tiger is bird'. III is the converse of this conclusion and so it holds.

    No jungle is bird. Some birds are rains.

    Since one premise is particular and the other negative, the conclusion must be particular negative (O-type) and should not contain the middle term. So, it follows that 'Some jungles are not rains'.

    Since I and II also involve the same terms and form a complementary pair, so either I or II follows.

    More questions

    • 1. PSYCHOLOGIST : NEUROSIS

    • Options
    • A. ophthalmologist : cataract
    • B. dermatologist : fracture
    • C. infant : pediatrician
    • D. rash : orthopedist
    • E. oncologist : measles
      • Discuss
    • 2. Optimist is to cheerful as pessimist is to

    • Options
    • A. gloomy
    • B. mean
    • C. petty
    • D. helpful
      • Discuss
    • 3. Statements: Death keeps no calendar.

      Conclusions:

      1. Man must die one day.
      2. Death can come at any time.


    • Options
    • A. Only conclusion I follows
    • B. Only conclusion II follows
    • C. Either I or II follows
    • D. Neither I nor II follows
    • E. Both I and II follow
      • Discuss
    • 4. Which word does NOT belong with the others?

    • Options
    • A. cornea
    • B. retina
    • C. pupil
    • D. vision
      • Discuss
    • 5. Many business offices are located in buildings having two to eight floors. If a building has more than three floors, it has a lift.

    • Options
    • A. All floors may be reached by lifts.
    • B. Only floors above the third floor have lifts.
    • C. Seventh floors have lifts.
    • D. Second floors do not have lifts.
      • Discuss
    • 6. Choose the picture that would go in the empty box so that the two bottom pictures are related in the same way as the top two:

    • Options
    • A. 1
    • B. 2
    • C. 3
    • D. 4
      • Discuss
    • 7. Choose the picture that would go in the empty box so that the two bottom pictures are related in the same way as the top two:

    • Options
    • A. 1
    • B. 2
    • C. 3
    • D. 4
      • Discuss
    • 8. Choose the picture that would go in the empty box so that the two bottom pictures are related in the same way as the top two:

    • Options
    • A. 1
    • B. 2
    • C. 3
    • D. 4
      • Discuss
    • 9. Statements: National Aluminium Company has moved India from a position of shortage to self-sufficiency in the metal.

      Conclusions:

      1. Previously, India had to import aluminium.
      2. With this speed, it can soon become a foreign exchange earner.


    • Options
    • A. Only conclusion I follows
    • B. Only conclusion II follows
    • C. Either I or II follows
    • D. Neither I nor II follows
    • E. Both I and II follow
      • Discuss
    • 10. Statement: Footpaths of a busy road are crowded with vendors selling cheap items.

      Courses of Action:

      1. The help of police should be sought to drive them away.
      2. Some space should be provided to them where they can earn their bread without blocking footpaths.


    • Options
    • A. Only I follows
    • B. Only II follows
    • C. Either I or II follows
    • D. Neither I nor II follows
    • E. Both I and II follow
      • Discuss

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