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  • Question
  • Statements: Some saints are balls. All balls are bats. Some tigers are balls.

    Conclusions:

    1. Some bats are tigers.
    2. Some saints are bats.
    3. All bats are balls.


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

  • Correct Answer
  • Only I and II follow 

    Explanation
    Some saints are balls. All balls are bats.

    Since one premise is particular, the conclusion must be particular and should not contain the middle term. So, it follows that 'Some saints are bats'. Thus, II follows. Some tigers are balls. All balls are bats.

    Since one premise is particular, the conclusion must be particular and should not contain the middle term. So, it follows that 'Some tigers are bats'. I is the converse of this conclusion and so it holds.


    Logical Deduction problems


    Search Results


    • 1. Statements: Some hills are rivers. Some rivers are deserts. All deserts are roads.

      Conclusions:

      1. Some roads are rivers.
      2. Some roads are hills.
      3. Some deserts are hills.


    • Options
    • A. None follows
    • B. Only I follows
    • C. Only I and II follow
    • D. Only II and III follow
    • E. All follow
    • Discuss
    • 2. Statements: Some pictures are frames. Some frames are idols. All idols are curtains.

      Conclusions:

      1. Some curtains are pictures.
      2. Some curtains are frames.
      3. Some idols are frames.


    • 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
    • 3. Statements: Some towels are brushes. No brush is soap. All soaps are rats.

      Conclusions:

      1. Some rats are brushes.
      2. No rat is brush.
      3. Some towels are soaps.


    • Options
    • A. None follows
    • B. Only either I or II follows
    • C. Only II follows
    • D. Only I and III follow
    • E. None of these
    • Discuss
    • 4. Statements:

      All fruits are vegetables. All pens are vegetables. All vegetables are rains.

      Conclusions:

      1. All fruits are rains.
      2. All pens are rains.
      3. Some rains are vegetables.


    • Options
    • A. None follows
    • B. Only I and II follow
    • C. Only II and III follow
    • D. Only I and III follow
    • E. All follow
    • Discuss
    • 5. Statements: Some taxis have horns. Some taxis have lights.

      Conclusions:

      1. Every taxi has either horn or light.
      2. Some taxis have neither light nor horn.
      3. Some taxis have horns as well as lights.
      4. No taxi has horn as well as light.


    • Options
    • A. Only I and II follow
    • B. Only II and III follow
    • C. Only II and IV follow
    • D. Either III or IV follows
    • E. All follow
    • Discuss
    • 6. Statements: Some pens are books. All schools are books. Some colleges are schools.

      Conclusions:

      1. Some colleges are pens.
      2. Some pens are schools.
      3. Some colleges are books.


    • 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
    • 7. Statements: All trains are buses. No room is bus. All boats are rooms.

      Conclusions:

      1. No boat is train.
      2. No bus is boat.
      3. No train is room.


    • Options
    • A. None follows
    • B. Only I and II follow
    • C. Only II and III follow
    • D. Only I and III follow
    • E. All follow
    • Discuss
    • 8. Statements: Some mountains are hillocks. Some mountains are rivers. Some mountains are valleys.

      Conclusions:

      1. All mountains are either hillocks or rivers or valleys.
      2. No valley is river.
      3. Some river are valleys.


    • Options
    • A. None follows
    • B. Only I follows
    • C. Only either II or III follows
    • D. Only III follows
    • E. None of these
    • Discuss
    • 9. Statements: Some blades are hammers. Some hammers are knives. Some knives are axes.

      Conclusions:

      1. Some axes are hammers.
      2. Some knives are blades.
      3. Some axes are blades.


    • Options
    • A. None follows
    • B. Only I follows
    • C. Only II follows
    • D. Only III follows
    • E. None of these
    • Discuss
    • 10. Statements: Some boxes are hammers. Some hammers are beads. All beads are rings.

      Conclusions:

      1. Some rings are hammers.
      2. Some hammers are boxes.
      3. Some rings are boxes.


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


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