ECAT Pre Engineering Mathematic MCQ Test With Answer for Chapter 3 (Logic)

According to Aristotle, in proposition there could be

• one possibilities A
• two possibilities B
• three possibilities C
• seven possibilities D

We often consult doctors or lawyers on the basis of their good

• personality A
• behaviour B
• reputation C
• good dealing D

The symbol∋ stand for

• Such that A
• There exist B
• For all C
• Belongs to D

-p is the

• Implication of p A
• disjunction of p B
• negation of p C
• conjunction of p D

A statement which is already false is called

• Tautology A
• Contrapsitive B
• Absurdity C
• Universal quantifiers D

All men are mortal, We are men, there fore, we are also mortal. This is a useful example of

• Deduction A
• Induction B
• Conjuction C
• disjunction D

Logic in which there is scope of third or fourth possibility is called.

• non-Aristotlian logic A
• Aristotlian logic B
• Postulates C
• induction logic D

The greater part of our knowledge, is based on

• deduction A
• induction B
• conjunction C
• disjunction D

If both p and q are false, then the disjunction of p and q is

• false A
• true B
• equal C
• equivalent D

10 is a even number or 0 is a natural number, then truth value of this disjunction is

• false A
• true B
• not discussed C
• negation of first D

A statement which is already false is called

• Tautology A
• Contrapsitive B
• Absurdity C
• Universal quantifiers D

If p is false, -p is

• True A
• Not true B
• Equal to p C
• Conjunction D

The conjunction of 3>5 , and 5>9, is

• False A
• True B
• Disjunction C
• Unknown D

• conclusion A
• consequent B
• hypothesis C
• conditional D

To draw conclusions front premises believed to be true, this way of reasoning is called

• deduction A
• induction B
• implication C
• disjunction D

Deduction is mostly used in

• elementary mathematics A
• natural science B
• higher mathematics C
• medicine D

Disjunction of p and q is

• p or q A
• p and q B
• p if q C
• p implies q D

Which of the following statement, is ture

• Lahore is in Punjab and 5>7 A
• Lahore is the capital of Pakistan and 3<23 B
• Lahore is capital of Sindh and 2+2=7 C
• Lahore is the capital of Sindh or 2+2 = 4 D

Which of the following statement, is true

• Lahore is in Punjab and 5>7 A
• Lahore is the capital of Pakistan and 3<23 B
• Lahore is capital of Sindh and 2+2 = 7 C
• Lahore is the capital of Sindh or 2+2=4 D

To draw conclusions from some experiments or few contacts only is called:

• Deduction A
• Implication B
• Conjunction C
• Induction D

All men are mortal. We are men, therefore, we are also mortal. This is a useful example of

• deduction A
• induction B
• conjunction C
• disjunction D

The symbol ∃ stand for

• Such that A
• This implies that B
• For all C
• There exist D

According to Aristotle, in preposition there could be

• One possibility A
• Two possibility B
• three possibility C
• Seven possibilites D

10 is a even number or 0 is a natural number, then truth value of this disjunction is

• False A
• True B
• Not discussed C
• negation of first D

A conjunction is considered to he true only if both its components are

• false A
• equilvalent B
• equal C
• true D

The greater part of our knowledge,is based on

• Deduction A
• Induction B
• Conjunction C
• Disjunction D

A conjunction is considered to be true only if both its components are

• False A
• Equivalent B
• Equal C
• True D

The statements of the form "If p then q" are called

• hypothesis A
• conditional B
• disjunction C
• conjunction D

• hypothesis A
• implication B
• consequent C
• conditional D

A daclarative statement which may be true or false but not both is called a

• hypothesis A
• proposition B
• implication C
• conjuction D