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

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

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

If p is false, ~ p is

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

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

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

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

While writing his books on geometry, Euelid used

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

A statement which is already false is called

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

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

For reasoning, we have to use

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

The symbol ∃ stand for

• Such that A
• This implies that B
• For all C
• There exist 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, there fore, we are also mortal. This is a useful example of

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

Basic-principles of deductive logic were laid down by:

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

Deduction is mostly used in

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

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

• deduction A
• implication B
• conjunction C
• induction 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

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

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

An implication of p and q is denoted by

• 
  A
• 
  B
• 
  C
• 
  D

If p is false, -p is

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

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

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

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

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

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

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

A statement which is already false is called

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

The greater part of our knowledge,is based on

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

While witting his hooks on geometry, Euclid used

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