ECAT Pre Engineering MCQ Test With Answer for Chapter 4 Mathematics

The set of cartesian product A x B consists of

• Domain A
• Range B
• Binary relation C
• Ordered pair D

The net of cartesian product AxB consists of

• domain A
• range B
• binary relation C
• ordered pair D

If no two elements of ordred pair of a function from A into B are equal, then it is called

• surjective A
• injuctive B
• bijective C
• on to D

The identity function is

• surjective A
• injuctive B
• bijective C
• into D

A semi-group having an identity is called a

• groupoid A
• non-commutative B
• abelian C
• monoid D

• injuctive as well as surjective A
• both onto and into B
• one - one and into C
• only (1 - 1) D

The set of first elements of the ordered pairs forming the relation is called is

• Domain A
• Range B
• Ordered paris C
• Relation D

Function is a special type of

• relation A
• ordered pairs B
• Cartesian product C
• Set D

Which of the following diagrams represent bijective function?

• 
  A
• 
  B
• 
  C
• 
  D

The function denoted by 1/f called the

• Reciprocal function A
• Inverse function B
• Constant function C
• Reverse function D

Identity element, if it exists, is

• inverse A
• unique B
• commutative C
• associative D

Addition is not operation on

• Natural numbers A
• Even numbers B
• odd numbers C
• set of integers D

Which of the following represent injuctive function

• 
  A
• 
  B
• 
  C
• 
  D

Which of the following diagrams represent into function?

• 
  A
• 
  B
• 
  C
• 
  D

The group of a constant line is

• Vertical line A
• Parabola B
• Circle C
• Horizontal line D

ax+by+c = 0, represent a

• circle A
• parabola B
• straight line C
• quadratic circle D

A function from A to B is called on-to function, if its range is

• A A
• B B
• A and B C
• neither A nor B D

ax+by+c = 0 , represents a

• Circle A
• Parabola B
• Straight line C
• Quadratic circle D

If range of a function f is B, then the function is

• surjective A
• injuctive B
• bijective C
• into D

• 
  A
• 
  B
• 
  C
• 
  D

The set of second elements of the ordered pairs forming a relation is called a

• Domain A
• range B
• function C
• relation D

• bijective function A
• into function B
• onto function C
• surjective D

Extraction of square root of a given number is a

• unary operation A
• binary operation B
• group C
• inverse function D

If A is non-empty set, any subset of A x A is called a relation in

• A A
• B B
• ∅ C
• r D

Which of the following notation defines AxB

• 
  A
• 
  B
• 
  C
• 
  D

Negation of a given number is an example of

• Binary operation A
• group B
• unary operation C
• function D

• similar images A
• distinct images B
• similar range C
• option a and c D

There will be no inverse if the function is

• one -to - one A
• One to many B
• onto C
• into D

The set of second elements of the ordered pairs forming a relation called a

• Domain A
• Range B
• Function C
• Relation D

arb mean

• a is related to b A
• b is related to a B
• a is reciprocal of b C
• a is not related to b D