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

Disjunction of p and q is

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

~ p is the

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

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

• deduction A
• induction B
• implication C
• disjunction 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
• Aristolian logic C
• non-Aristolian logic D

The symbol ∃ stand for

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

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

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

The greater part of our knowledge,is based on

• Deduction A
• Induction B
• Conjunction C
• Disjunction 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

Any conditional and its contrapositive are

• Equilavant A
• Opposite B
• Equal C
• Not Equal D

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

Basic-principles of deductive logic were laid down by:

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

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

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

For reasoning, we have to use

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

Conjunction of two statements p and q is denoted symbolically as

• 
  A
• 
  B
• 
  C
• 
  D

• p and q A
• p or q B
• p implies q C
• p is equivalent to q D

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

• 
  A
• 
  B
• 
  C
• 
  D

The greater part of our knowledge, is based on

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

Basic principles of deductive logic were laid down by

• Euclid A
• Leibniz B
• Newton C
• Aristotle 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

While writing his books on geometry, Euelid used

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

The symbol∋ stand for

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

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

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

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

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

• deduction A
• implication B
• conjunction C
• induction 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

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

While witting his hooks on geometry, Euclid used

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

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

• False A
• Equivalent B
• Equal C
• True 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

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