ECAT Pre General Science Chapter 4 MCQ Test With Answer for Mathematics chapter 4 (Functions & Groups)

The graph of a constant line is

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

The function denoted by 1/f called the

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

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

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

Extraction of square root of a given number is a

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

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

Which of the following diagrams represent bijective 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

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

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

The inverse of a line is

• inverse A
• Line B
• quadratic C
• Circle 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

• 
  A
• 
  B
• 
  C
• 
  D

The group of a constant line is

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

The net of cartesian product AxB consists of

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

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

• multiplication A
• addition B
• subtraction C
• division 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

Which of the following represent injuctive function

• 
  A
• 
  B
• 
  C
• 
  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

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

• into function A
• onto function B
• None of these C
• surjective D

• 
  A
• 
  B
• 
  C
• 
  D

Which of the following diagrams represent into function?

• 
  A
• 
  B
• 
  C
• 
  D

Function is a special type of

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

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

Function is a special type of

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

A semi-group having an identity is called a

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

Negation of a given number is an example of

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

Which of the following notation defines AxB

• 
  A
• 
  B
• 
  C
• 
  D

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