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

The greater part of our knowledge,is based on

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

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

If p is false, -p is

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

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

• Euelid A
• Leibniz B
• Aristotle C
• Newton 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 be true only if both its components are

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

A statement which is already false is called

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

Conjunction of two statements p and q is denoted symbolically as

• 
  A
• 
  B
• 
  C
• 
  D

If p is false, ~ p is

• true A
• not true B
• equal to p C
• conjuction D

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

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

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

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

• deduction A
• induction B
• implication 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

Any conditional and its contrapositive are

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

Deduction is mostly used in

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

An implication of p and q is denoted by

• 
  A
• 
  B
• 
  C
• 
  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 symbol∋ stand for

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

The symbol ∃ stand for

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

The greater part of our knowledge, is based on

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

Disjunction of p and q is

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

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

• false A
• true B
• unknown C
• disjunction D

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

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

A statement which is already false is called

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

• hypothesis A
• implication B
• consequent C
• conditional 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