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

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

The greater part of our knowledge,is based on

• 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

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

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

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

Basic-principles of deductive logic were laid down by:

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

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

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

Basic principles of deductive logic were laid down by

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

~ p is the

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

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

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

Disjunction of p and q is

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

Conjunction of two statements p and q is denoted symbolically as

• 
  A
• 
  B
• 
  C
• 
  D

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

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

The conditional statement "If p then q" is logically equivalent to the statement.

• Not p or Not q A
• Not p and Not q B
• Not p or q C
• p or q D

Any conditional and its contrapositive are

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

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

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

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

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

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

An implication of p and q is denoted by

• 
  A
• 
  B
• 
  C
• 
  D

Deduction is mostly used in

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

While writing his books on geometry, Euelid used

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

Any two propositions which is combined by the word "and" and form a compound proposition is called

• conditional of the original proposition A
• consequent of the original proposition B
• disjunction of the original proposition C
• conjunction of the original propositoin D

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

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

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

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

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

• 
  A
• 
  B
• 
  C
• 
  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

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