Engineering Quantitative Aptitude English Reasoning General Knowledge Coding Others

Quiz: Logical Deduction - Section 1

To View Tricks: Login Required

Number of Questions: 25

Question: 16 -

Statements: All educated people read newspapers. Rahul does not read newspaper.

Conclusions:

  1. Rahul is not educated.
  2. Reading newspaper is not essential to be educated.

Options:

  1. Either I or II follows

  2. Both I and II follow

  3. Only conclusion II follows

  4. Only conclusion I follows

    5. Answer:

    Only conclusion I follows
    Solution:

    Since both the premises are universal and one premise is negative, the conclusion must be universal negative and should not contain the middle term. So, only I follows. 

Question: 17 -

Statements: Bureaucrats marry only intelligent girls. Tanya is very intelligent.

Conclusions:

  1. Tanya will marry a bureaucrat.
  2. Tanya will not marry a bureaucrat.

Options:

  1. Only conclusion II follows

  2. Either I or II follows

  3. Only conclusion I follows

  4. Both I and II follow

    5. Answer:

    Either I or II follows
    Solution:

    The data does not mention whether all intelligent girls are married to bureaucrats. So, either I or II may follow. 

Question: 18 -

Statements: All pens are chalks. All chairs are chalks.

Conclusions:

  1. Some pens are chairs.
  2. Some chalks are pens.

Options:

  1. Only conclusion II follows

  2. Neither I nor II follows

  3. Either I or II follows

  4. Only conclusion I follows

    5. Answer:

    Only conclusion II follows
    Solution:

    Since the middle term 'chalks' is not distributed even once in the premises, no definite conclusion follows. However, II is the converse of the first premise and so it holds. 

Question: 19 -

Statements: Some engineers are fools. Anand is an engineer.

Conclusions:

  1. Some fools are engineers.
  2. Anand is a fool.

Options:

  1. Only conclusion I follows

  2. Either I or II follows

  3. Only conclusion II follows

  4. Both I and II follow

    5. Answer:

    Only conclusion I follows
    Solution:

    Since the middle term 'engineer' is not distributed even once in the premises, no definite conclusion follows. However, I is the converse of the first premise and thus it holds. 

Question: 20 -

Statements: Some men are educated. Educated persons prefer small families.

Conclusions:

  1. All small families are educated.
  2. Some men prefer small families.

Options:

  1. Only conclusion II follows

  2. Either I or II follows

  3. Neither I nor II follows

  4. Only conclusion I follows

    5. Answer:

    Only conclusion II follows
    Solution:

    Since one premise is particular, the conclusion must be particular and should not contain the middle term. Thus, only II follows.