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Logical Deduction :: Logic :: Type 1 (Two Premise Arguments)




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16.

In this question, two statements P and Q are given. You may look into their logical acceptability and mark your answer as 

P: Some A's and some B's are C's. Some C's are both A's and B's. Therefore some A's are B's.

Q: All A's are B's. Some C's are A's. Therefore, Some C's are B's.


A) If both P and Q are true

B) If P is correct and Q is wrong or doubtful

C) If p is wrong or doubtful and Q is correct

D) If both P and Q are wrong or doubtful



17.

Each of these questions consists of two statements P and Q. They may look factually absurd. You have to ignore this absurdity and concentrate only on the logic involved.

P: Jackals live in forests. Cities are in forests. Therefore jackals live in cities.

Q: Some tables are grass. All stools are grass. Therefore all tables are stools.


A) If both P and Q are true

B) If both P and Q are false or doubtful

C) If P is true and Q is false or doubtful

D) If P is false or doubtful and Q is true



18.

In the question, two statements are given followed by three or four conclusions numbered I, II, III and IV. You have to take the given statements to be true even if they seem to be at variance from the commonly known facts and then decide which of the given conclusions logically follows from the given statements disregarding commonly known facts.

Statements: Some tables are TVs. Some TVs are radios.

Conclusions: I. Some tables are radios.

                   II.Some radios are tables.

                   III.All radios are TVs.

                   IV. All TVs are tables.


A) None follows

B) All follow

C) Only I and III follows

D) Only II and IV follow



19.

The question given below consists of five or six statements followed by options consisting of three statements put together in a specific order. Choose the option which indicates a valid argument containing logically related statements that is, where the third statement is a conclusion drawn from the preceding two statements.

A : All that is honest is not monetary. 

B : Some providential things are xylophones       C : No xylophone is providential.

D : All that is honest is monetary                       E : No honest thing is providential

F : All honest-things are xylophones


A) AEC

B) AFC

C) BDE

D) CFE



20.

The question given below consists of five or six statements followed by options consisting of three statements put together in a specific order. Choose the option which indicates a valid argument containing logically related statements that is, where the third statement is a conclusion drawn from the preceding two statements.

A : All software companies employ knowledge workers

B : Infotech employs knowledge workers

C : Infotech is a software company

D : Some software companies employ knowledge workers

E : Infotech employs only knowledge workers


A) ABC

B) ACB

C) ACE

D) CDB



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