August 2016 - Solved Paper

16:  

Anil played 8 cricket matches. The mean (average) of the runs was found to be 80. After playing four more matches, the mean of the runs of all the matches was found to be 70. The total runs made in the last four matches is

A.

400

B.

300

C.

200

D.

100

 
 

Option: B

Explanation :

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17:  

If two propositions are connected in such a way that they cannot both be false although they may both be true, then their relationship is called

A.

Contrary

B.

Subcontrary

C.

Contradictory

D.

Subalternation

 
 

Option: A

Explanation :

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18:   Which one among the following is not a characteristic of a deductive type of argument ?
A.

The conclusion follows from the premise/premises necessarily.

B.

The argument admits degree of complexity.

C.

The argument provides us knowledge about matters of fact.

D.

The argument must be either valid or invalid.

 
 

Option: D

Explanation :

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19:   Select the code which states the condition of an invalid deductive argument :
A.

All the premises are true but the conclusion is false.

B.

Some of the premises are true but the conclusion is false.

C.

All the premises are false and the conclusion is also false.

D.

All the premises are true and the conclusion is also true.

 
 

Option: D

Explanation :

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20:  

Given below are two premises, with four conclusions drawn from them (taking singly or together); which conclusions are validly drawn ? Select the correct answer from the codes given below :

Premises : (i) All bats are mammals.
 
(ii) Birds are not bats.

Conclusions : (a) Birds are not mammals.

(b) Bats are not birds.

(c) All mammals are bats.

(d) Some mammals are bats.

A.

(a), (b) and (d)

B.

(b) and (d)

C.

(a) and (c)

D.

(b), (c) and (d)

 
 

Option: D

Explanation :

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