EduSahara™ Worksheet

EduSahara™ Assignment

Name : Functions

Chapter : Relations and Mapping

Grade : ICSE Grade VIII

License : Non Commercial Use

Question 1

1.

Which of the following relations is a function given ,

A =
{4,2,6,10,3,9}
and B =
{2,8,3,7,1,5}
?

(i)

{(4,7),(2,1),(6,2),(3,7),(9,5)}
(ii)

{(4,7),(2,1),(6,2),(3,7),(9,5),(8,9)}
(iii)

{(4,7),(2,1),(6,2),(10,7),(3,7),(9,5)}
(iv)

{(4,7),(2,1),(6,2),(10,7),(3,7),(9,5),(2,6)}
(v)

{(4,7),(2,1),(10,7),(3,7),(9,5),(2,6)}

Question 2

2.

Which of the following relations
R

:

A

→

B
represent a function,

given A =
{2,5,9,7}
and B =
{8,3,4,10}
?

(i)

IV
(ii)

III
(iii)

I
(iv)

II

Question 3

3.

Which of the following does not represent a function
f

:

A

→

B
,

where A =
{2,1,6,3,4,5}
and B =
{7,8,10,9}
?

(i)

{(2,7),(1,8),(4,8),(3,9),(4,7),(6,7)}
(ii)

{(5,7),(1,9),(6,7),(2,9),(4,9),(3,10)}
(iii)

{(4,10),(5,8),(6,7),(1,7),(3,7),(2,10)}
(iv)

{(3,9),(5,9),(6,10),(4,8),(2,10),(1,10)}
(v)

{(6,9),(4,8),(5,9),(2,9),(3,8),(1,7)}

Question 4

4.

Which of the following does not represent a function
f

:

A

→

B
,

where A =
{6,10,2,5,4}
and B =
{3,1,7,8,9}
?

(i)

{(4,1),(2,8),(5,8),(10,9),(6,1)}
(ii)

{(6,8),(2,1),(4,7),(10,7)}
(iii)

{(10,3),(2,7),(5,7),(6,8),(4,7)}
(iv)

{(5,1),(10,8),(2,8),(6,7),(4,3)}
(v)

{(10,8),(5,8),(4,1),(6,8),(2,9)}

Question 5

5.

Which of the following does not represent a function
f

:

A

→

B
,

where A =
{3,4,7}
and B =
{8,2,5,9}
?

(i)

IV
(ii)

I
(iii)

II
(iv)

III

Question 6

6.

Which of the following does not represent a function
f

:

A

→

B
,

where A =
{6,1,2}
and B =
{4,10,9,7}
?

(i)

II
(ii)

I
(iii)

III
(iv)

IV

Question 7

7.

Which of the following relations is a function
f

:

A

→

B
,

where A =
{k,g,e,o,d,a}
and B =
{e,b,g,h}
?

(i)

{(e,e),(g,g),(o,b),(a,b),(k,h),(d,g),(b,o)}
(ii)

{(e,e),(g,g),(a,b),(k,h),(d,g),(b,o)}
(iii)

{(e,e),(g,g),(o,b),(a,b),(k,h),(d,g)}
(iv)

{}
(v)

{(e,e),(g,g),(o,b),(k,h),(d,g)}

Question 8

8.

Which of the following relations does not represent a function
f

:

A

→

B
,

where A =
{n,f,o,d,g,c}
and B =
{k,j,a,b,e}
?

(i)

{(f,b),(o,k),(n,a),(g,e),(c,e),(d,e)}
(ii)

{(d,a),(f,k),(g,k),(o,e),(c,a),(n,b)}
(iii)

{(g,k),(n,j),(o,j),(d,a),(f,b),(c,a)}
(iv)

{(o,a),(g,j),(d,b),(c,a),(n,k),(f,k)}
(v)

{(d,j),(n,e),(g,k),(c,b),(g,e),(o,k)}

Assignment Key