Logical Deduction ( 11 to 15 )

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Questions:


11. Statement

A)    Many bikes are cars. All cars are trucks.

B)    Conclusion

C)    Some bikes are cars.

D)    No truck is a bike.

View Answer

Answer: option (A)

Explanation:

As the first premise is particular in statement so, the conclusion must be particular and should not contain the middle term. Thus, it follows ‘I’ conclusion.

 

12. Statement

A)    All animals are big. Some big are elephants.

B)    Conclusion

C)    Some animals are elephants.

D)    Some elephants are big.

View Answer

Answer: option (B)

Explanation:

As the middle term ‘big’ is not distributed even once in the premises so, it does not follow any definite conclusion. Although, ‘II’ conclusion is the converse of the second premise and so it holds.

 

13. Statement

A)    Some books are pencils. Some pens are pencils.

B)    Conclusion

C)    Some pencils are pens.

D)    Some pencils are books.

View Answer

Answer: option (E)


Explanation:

As both premises are particular so, it does not follow definite conclusion. Although, ‘I’ conclusion is the converse of second premise, while ‘II’ is the converse of the first premise. So, both of them hold.

 

 

14. Statement

A)    All literate people read magazines. Ram does not read magazines.

B)    Conclusion

C)    Ram is not literate.

D)    Reading magazine is not essential to be literate.

View Answer

Answer: option (A)

Explanation:

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

 

15. Statement

A)    All books are chalks. All tables are chalks.

B)    Conclusion

C)    Some books are tables.

D)    Some chalks are books.

View Answer

Answer: option (B)

Explanation:

As the middle term ‘chalks’ is not distributed even once in the premises so, it does not follow any definite conclusion. Although, ‘II’ is the converse of the first premise and so it holds.

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