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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. 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
    • 2. Which word does NOT belong with the others?

    • Options
    • A. couch
    • B. rug
    • C. table
    • D. chair
      • Discuss
    • 3. Which word does NOT belong with the others?

    • Options
    • A. eel
    • B. lobster
    • C. crab
    • D. shrimp
      • Discuss
    • 4. 14 14 26 26 38 38 50

    • Options
    • A. 60 72
    • B. 50 62
    • C. 50 72
    • D. 62 62
    • E. 62 80
      • Discuss
    • 5. All guilty politicians were arrested. Kishan and Chander were among those arrested.

    • Options
    • A. All politicians are guilty.
    • B. All arrested people are politicians.
    • C. Kishan and Chander were not politicians.
    • D. Kishan and Chander were guilty.
      • Discuss
    • 6. Statement: Is caste-based reservation policy in professional colleges justified?

      Arguments:

      1. Yes. The step is a must to bring the underprivileged at par with the privileged ones.
      2. No. It obstructs the establishment of a classless society.
      3. Yes. This will help the backward castes and classes of people to come out of the oppression of upper caste people.


    • Options
    • A. Only I and II are strong
    • B. Only II is strong
    • C. Only II and III are strong
    • D. Only I and III are strong
    • E. All are strong
      • Discuss
    • 7. Statement: 'Guests should be provided lunch.' - A tells B.

      Assumptions:

      1. Unless told, lunch may not be provided.
      2. Guests will stay during lunch time.


    • Options
    • A. Only assumption I is implicit
    • B. Only assumption II is implicit
    • C. Either I or II is implicit
    • D. Neither I nor II is implicit
    • E. Both I and II are implicit
      • Discuss
    • 8. Which word does NOT belong with the others?

    • Options
    • A. dodge
    • B. flee
    • C. duck
    • D. avoid
      • Discuss
    • 9. Statement: Should agriculture in rural India be mechanized?

      Arguments:

      1. Yes. It would lead to higher production.
      2. No. Many villagers would be left unemployed.


    • Options
    • A. Only argument I is strong
    • B. Only argument II is strong
    • C. Either I or II is strong
    • D. Neither I nor II is strong
    • E. Both I and II are strong
      • Discuss
    • 10. 28 25 5 21 18 5 14

    • Options
    • A. 11 5
    • B. 10 7
    • C. 11 8
    • D. 5 10
    • E. 10 5
      • Discuss

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