Logical Deduction ( 16 to 20 )

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Questions:

16. Statement

A)    All doors are windows. No window is a wall.

B)    Conclusion

C)    No door is wall.

D)    No wall is window.

View Answer

Answer: option (E)

Explanation:

As both the premises are universal in the given statement and one of the premise is negative, the conclusion must be negative. Also, the conclusion does not contain the middle term. So, ‘I’ conclusion follows. Although, ‘II’ is the converse of the second premise and thus it also holds.

 

17. Statement

A)    All women are married. Some women are literate.

B)    Conclusion

C)    Some married are literate.

D)    Some literate are married.

View Answer

Answer: option (E)

Explanation:

As one premise is particular in the given statement so, the conclusion must be particular and should not contain the middle term. So, ‘I’ conclusion follows and ‘II’ conclusion is the converse of ‘I’ and thus it also holds.

 

18. Statement

A)    All houses are bungalows. All bungalows are temples.

B)    Conclusion

C)    Some temples are houses.

D)    Some temples are bungalows.


View Answer

Answer: option (E)

Explanation:

As discussed above, it follows that ‘All houses are temples’. ‘I’ is the converse of this conclusion and so it holds and ‘II’ is the converse of the second premise and so it also holds.

 

19. Statement

A)    All cars fly. Some bikes fly.

B)    Conclusion

C)    All cars are bikes.

D)    Some bikes do not fly.

View Answer

Answer: option (D)

Explanation:

As the middle term ‘fly’ is not distributed even once in the premises and it does not follow definite conclusion.

 

20. Statement

A)    Some tables are caps. No cap is blue.

B)    Conclusion

C)    Some caps are tables.

D)    No table is blue.

View Answer

Answer: option (A)

Explanation:

As one premise is particular and the other premise is negative and the conclusion must be particular negative and should not contain the middle term. So, it follows that ‘Some caps are not blue’. Although, ‘I’ is the converse of the first premise and thus it holds

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