ECAT Pre Engineering MCQ Test With Answer for Chapter 4 Mathematics

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

ax+by+c = 0, represent a

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

Which of the following diagrams represent into function?

• 
  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

The inverse of a line is

• inverse A
• Line B
• quadratic C
• Circle 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

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

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

There will be no inverse if the function is

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

Addition is not operation on

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

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

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

The graph of a constant line is

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

ax+by+c = 0 , represents a

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

The set of cartesian product A x B consists of

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

The function denoted by 1/f called the

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

A semi-group having an identity is called a

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

Negation of a given number is an example of

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

The group of a constant line is

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

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

• surjective A
• injuctive B
• bijective C
• into 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 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

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

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