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

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

Which of the following notation defines AxB

• 
  A
• 
  B
• 
  C
• 
  D

Which of the following represent injuctive function

• 
  A
• 
  B
• 
  C
• 
  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 ordred pair of a function from A into B are equal, then it is called

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

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

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

Function is a special type of

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

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

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

• 
  A
• 
  B
• 
  C
• 
  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

• 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

(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

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

• A A
• B B
• D C
• r D

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

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

• 
  A
• 
  B
• 
  C
• 
  D

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

• Function A
• Domain B
• Range C
• Binary relation D

The function denoted by 1/f called the

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

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

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

Which of the following diagrams represent into function?

• 
  A
• 
  B
• 
  C
• 
  D

Which of the following is surjective

• 
  A
• 
  B
• 
  C
• 
  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 cartesian product A x B consists of

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

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

• Surjective A
• Injuctive B
• Bijective C
• on to 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

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

Identity element, if it exists, is

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

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

A function f from A to B can be written as

• 
  A
• 
  B
• 
  C
• 
  D