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  • 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.


    Logical Deduction problems


    Search Results


    • 1. Statements: Some rats are cats. Some cats are dogs. No dog is cow.

      Conclusions:

      1. No cow is cat.
      2. No dog is rat.
      3. Some cats are rats.


    • Options
    • A. None follows
    • B. Only I and II follow
    • C. Only II and III follow
    • D. Only III follows
    • E. All I, II and III follow
    • Discuss
    • 2. Statements: All flowers are toys. Some toys are trees. Some angels are trees.

      Conclusions:

      1. Some angels are toys.
      2. Some trees are flowers.
      3. Some flowers are angels.


    • Options
    • A. None follows
    • B. Only I follows
    • C. Only II follows
    • D. Only III follows
    • E. Only I and III follow
    • Discuss
    • 3. Statements: All tigers are lions. No cow is lion. Some camels are cows.

      Conclusions:

      1. Some lions are camels.
      2. No camel- is tiger.
      3. Some tigers are cows.


    • Options
    • A. None follows
    • B. Only I follows
    • C. Only II follows
    • D. Only III follows
    • E. Either I or II follows
    • Discuss
    • 4. Statements: All dolls are windows. All bottles are windows. All cars are bottles.

      Conclusions:

      1. All cars are windows.
      2. Some cars are dolls.
      3. Some windows are cars.


    • Options
    • A. Only I and II follow
    • B. Only II and III follow
    • C. Only I and III follow
    • D. All follow
    • E. None of these
    • Discuss
    • 5. Statements: Some blankets are beds. Some pillows are blankets. All beds are pillows.

      Conclusions:

      1. Some blankets are pillows.
      2. Some pillows are beds.
      3. Some beds are blankets.


    • Options
    • A. Only either I or II follows
    • B. Only I and either II or III follow
    • C. Only III and either I or II follow
    • D. All I, II and III follow
    • E. None of these
    • Discuss
    • 6. Statements: All snakes are trees. Some trees are roads. All roads are mountains.

      Conclusions:

      1. Some mountains are snakes.
      2. Some roads are snakes.
      3. Some mountains are trees.


    • Options
    • A. Only I follows
    • B. Only II follows
    • C. Only III follows
    • D. Both I and II follow
    • E. None follows
    • Discuss
    • 7. Statements: All trees are flowers. No flower is fruit. All branches are fruits.

      Conclusions:

      1. Some branches are trees.
      2. No fruit is tree.
      3. No tree is branch.


    • Options
    • A. None follows
    • B. Only either I or III follows
    • C. Only II follows
    • D. Only either I or III, and II follow
    • E. None of these
    • Discuss
    • 8. Statements: Some uniforms are covers. All covers are papers. All papers are bags.

      Conclusions:

      1. All covers are bags.
      2. Some bags are covers, papers and uniforms.
      3. Some uniforms are not papers.


    • Options
    • A. Only I follows
    • B. Only I and II follow
    • C. Only III follows
    • D. All I, II and III follow
    • E. None of these
    • Discuss
    • 9. Statements: No rabbit is lion. Some horses are lions. All rabbits are tables.

      Conclusions:

      1. Some tables are lions.
      2. Some horses are rabbits.
      3. No lion is table.


    • Options
    • A. None follows
    • B. Only either I or III follows
    • C. Only II and III follow
    • D. Only III follows
    • E. None of these
    • Discuss
    • 10. Statements: All benches are desks. Some desks are roads. All roads are pillars.

      Conclusions:

      1. Some pillars are benches.
      2. Some pillars are desks.
      3. Some roads are benches.
      4. No pillar is bench.


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


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