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 =
{10,5,6,4,7}
and B =
{2,10,5,8}
?

(i)

{(10,5),(5,10),(4,2),(7,8)}
(ii)

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

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

{}

Question 2

2.

Which of the following relations
R

:

A

→

B
represent a function,

given A =
{6,5,2}
and B =
{9,1}
?

(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 =
{3,2,7,10}
and B =
{4,1,5,9}
?

(i)

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

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

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

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

{(2,4),(7,5),(10,4),(3,4)}

Question 4

4.

Which of the following does not represent a function
f

:

A

→

B
,

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

(i)

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

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

{(2,9),(8,5),(4,9),(6,7),(3,5),(1,10)}
(iv)

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

{(6,10),(4,10),(1,5),(8,9),(2,7),(3,10)}

Question 5

5.

Which of the following does not represent a function
f

:

A

→

B
,

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

(i)

III
(ii)

II
(iii)

I
(iv)

IV

Question 6

6.

Which of the following does not represent a function
f

:

A

→

B
,

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

(i)

IV
(ii)

III
(iii)

I
(iv)

II

Question 7

7.

Which of the following relations is a function
f

:

A

→

B
,

where A =
{k,j,h,a}
and B =
{m,n,f,b}
?

(i)

{}
(ii)

{(k,m),(a,m),(j,b),(n,h)}
(iii)

{(k,m),(h,n),(a,m),(j,b)}
(iv)

{(k,m),(h,n),(j,b)}
(v)

{(k,m),(h,n),(a,m),(j,b),(n,h)}

Question 8

8.

Which of the following relations does not represent a function
f

:

A

→

B
,

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

(i)

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

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

{(f,i),(k,i),(h,a),(g,a),(e,a)}
(iv)

{(e,d),(g,b),(k,a),(h,b),(f,d)}
(v)

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

Assignment Key