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

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

Which of the following represent injuctive function

• 
  A
• 
  B
• 
  C
• 
  D

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

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

Function is a special type of

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

Such a function which is (1 -1) is called

• surjective A
• injuctive B
• bijective C
• into 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

Which of the following is surjective

• 
  A
• 
  B
• 
  C
• 
  D

Which of the following notation defines AxB

• 
  A
• 
  B
• 
  C
• 
  D

ax+by+c = 0 , represents 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

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

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

Which of the following diagrams represent bijective function?

• 
  A
• 
  B
• 
  C
• 
  D

The extraction of a cube root of a given number is a

• Binary operation A
• Unary operation B
• group C
• multiplicative inverse D

Function is a special type of

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

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

A relation a into B in which Domain is not equal to a, is called.

• Into function A
• on to function B
• None of these C
• Surjective D

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

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

The net of cartesian product AxB consists of

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

If the number of elements in set A is n, and in set B is m, then the number of elements in AxB will

• n^m A
• mⁿ B
• m x n C
• m + n D

Negation of a given number is an example of

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

The inverse of a line is

• inverse A
• Line B
• quadratic C
• Circle D

The graph of a constant line is

• vertical line A
• parabola B
• circle C
• horizontal line D

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

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

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

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

Which of the following diagrams represent into function?

• 
  A
• 
  B
• 
  C
• 
  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