ECAT Pre Engineering Mathematic MCQ Test With Answer for Chapter 4 (Functions and Groups)

• 
  A
• 
  B
• 
  C
• 
  D

Function is a special type of

• relation A
• ordered pairs B
• cartesian product C
• sets D

• 
  A
• 
  B
• 
  C
• 
  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

If no two elements of ordered pair of a functions from A into B are equal, then it is called.

• Surjective A
• Injuctive B
• Bijective C
• Onto D

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

• domain A
• range B
• ordered paris C
• relation D

If no two elements of ordered pairs of a function from A onto B are the same, then it is called

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

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

• A A
• B B
• D C
• r D

ax+by+c = 0, represent a

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

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

Which of the following diagrams represent into function?

• 
  A
• 
  B
• 
  C
• 
  D

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

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

There will be no inverse if the function is

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

The set {E,0}, is closed under (ordinary)

• multiplication A
• addition B
• subtraction C
• division D

Which of the following is surjective

• 
  A
• 
  B
• 
  C
• 
  D

Let A and B be two non-empty sets, then any subset of the cartesian product AxB is called a

• function A
• domain B
• range C
• binary relation D

Addition is not operation on

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

A function∫ will have an inverse function if and only if it is a

• onto function A
• into function B
• Constant C
• one-one function D

Which of the following notation defines AxB

• 
  A
• 
  B
• 
  C
• 
  D

The net of cartesian product AxB consists of

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

N is closed with respect to ordinary

• addition A
• multiplication B
• addition and multiplication C
• division D

the function y = mx+c is, called linear function, because

• it has only two variables A
• it has one varible B
• its graphs is straight line C
• its graphs is circle D

ax+by+c = 0 , represents a

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

A semi-group having an identity is called a

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

(a,b) = (c,d) if and only if

• a=b and c =d A
• a = d and b = c B
• a = c and b = d C
• a - b = c -d D