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

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

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

For reasoning, we have to use

• implication A
• conjunction B
• induction C
• proposition D

The greater part of our knowledge,is based on

• Deduction A
• Induction B
• Conjunction C
• Disjunction 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, therefore, we are also mortal. This is a useful example of

• deduction A
• induction B
• conjunction C
• disjunction 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

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

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

Basic principles of deductive logic were laid down by

• Euclid A
• Leibniz B
• Newton C
• Aristotle D

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

• false A
• true B
• not valid C
• undefine D

Deductive logic in which every statement is regarded as true or false and there is no other possibility is called:

• Deductive logic A
• Inductive logic B
• Aristotlian logic C
• Non-Aristotlian logic D

While witting his hooks on geometry, Euclid used

• inductive method A
• deductive method B
• implication C
• proposition D

While writing his books on geometry, Euelid used

• Inductive method A
• Deductive method B
• Implication C
• proposition 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

The converse and Inverse are

• Equivalent to each other A
• Opposite to each other B
• Equal to each other C
• Not Equal to each other D

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

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

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

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

The disjunction of two statements p and q, is denoted symbolically as

• 
  A
• 
  B
• 
  C
• 
  D

To draw conclusions from some expreiments or few contacts only is called

• deduction A
• implication B
• conjunction C
• induction 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

Conjunction of two statements p and q is denoted symbolically as

• 
  A
• 
  B
• 
  C
• 
  D

An implication of p and q is denoted by

• 
  A
• 
  B
• 
  C
• 
  D

~ p is the

• implication of p A
• disjunction of p B
• negation of p C
• conjuction of p D

The greater part of our knowledge, is based on

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

Deduction is mostly used in

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

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

• Hypothesis A
• Proposition B
• implication C
• conjunction D

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

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

A statement which is already false is called

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

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

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