Mathematics ECAT Pre Engineering Chapter 4 Functions and Groups Online Test

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

• surjective A
• injuctive B
• bijective C
• into 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

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

Which of the following is surjective

• 
  A
• 
  B
• 
  C
• 
  D

There will be no inverse if the function is

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

Function is a special type of

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

A function f from A to B can be written as

• 
  A
• 
  B
• 
  C
• 
  D

ax+by+c = 0 , represents a

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

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 graph of a constant line is

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

Which of the following represent injuctive function

• 
  A
• 
  B
• 
  C
• 
  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 f from A to B can be written as

• 
  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

Function is a special type of

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

The net of cartesian product AxB consists of

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

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 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

ax+by+c = 0, represent a

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

N is closed with respect to ordinary

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