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

  • 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

  • Correct Answer
  • None of these 

    Explanation
    All trees are flowers. No flower is fruit.

    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 tree is fruit'. II is the converse of this conclusion and so it follows.

    All branches are fruits. No flower is fruit.

    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 branch is flower'.

    All trees are flowers. No branch is tree.

    As discussed above, it follows that 'No tree is branch'. So, III follows.

    Hence, both II and III follow.

    More questions

    • 1. Statement: Many historians have done more harm than good by distorting truth.

      Assumptions:

      1. People believe what is reported by the historians.
      2. Historians are seldom expected to depict the truth.


    • 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
    • 2. Look at this series: 58, 52, 46, 40, 34, ... What number should come next?

    • Options
    • A. 26
    • B. 28
    • C. 30
    • D. 32
      • Discuss
    • 3. Which word does NOT belong with the others?

    • Options
    • A. tape
    • B. twine
    • C. cord
    • D. yarn
      • Discuss
    • 4. 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
    • 5. A Guarantee is a promise or assurance that attests to the quality of a product that is either (1) given in writing by the manufacturer or (2) given verbally by the person selling the product. Which situation below is the best example of a Guarantee?

    • Options
    • A. Melissa purchases a DVD player with the highest consumer ratings in its category.
    • B. The salesperson advises Curt to be sure that he buys an air conditioner with a guarantee.
    • C. The local auto body shop specializes in refurbishing and selling used cars.
    • D. Lori buys a used digital camera from her coworker who says that she will refund Lori's money if the camera's performance is not of the highest quality.
      • Discuss
    • 6. B2CD, _____, BCD4, B5CD, BC6D

    • Options
    • A. B2C2D
    • B. BC3D
    • C. B2C3D
    • D. BCD7
      • Discuss
    • 7. Statement: "You should not grant him leave in this week due to exigency of work." - A supervisor advises the administrative officer.

      Assumptions:

      1. Request for leave can be turned down also.
      2. The supervisor has reviewed the work required to be done during the said period.


    • 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. Statements: In a one day cricket match, the total runs made by a team were 200. Out of these 160 runs were made by spinners.

      Conclusions:

      1. 80% of the team consists of spinners.
      2. The opening batsmen were spinners.


    • 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
    • 9. Statement: "This drink can be had either as it is, or after adding ice to it." - An advertisement.

      Assumptions:

      1. People differ in their preferences.
      2. Some people will get attracted to the drink as it can be had as it is.


    • 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
    • 10. Statements: Some trains are roads. No road is jungle. All flowers are jungles.

      Conclusions:

      1. Some trains are flowers.
      2. Some trains are jungles.
      3. Some flowers are trains.
      4. No road is flower.


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

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