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

(i)

{}
(ii)

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

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

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

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

Question 2

2.

Which of the following relations
R

:

A

→

B
represent a function,

given A =
{8,2,5}
and B =
{4,6}
?

(i)

I
(ii)

III
(iii)

IV
(iv)

II

Question 3

3.

Which of the following does not represent a function
f

:

A

→

B
,

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

(i)

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

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

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

{(2,8),(9,8),(2,7),(6,5)}
(v)

{(6,5),(3,5),(9,1),(2,1)}

Question 4

4.

Which of the following does not represent a function
f

:

A

→

B
,

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

(i)

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

{(8,6),(1,6),(9,6),(5,6)}
(iii)

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

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

{(5,3),(8,7),(1,7)}

Question 5

5.

Which of the following does not represent a function
f

:

A

→

B
,

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

(i)

II
(ii)

I
(iii)

III
(iv)

IV

Question 6

6.

Which of the following does not represent a function
f

:

A

→

B
,

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

(i)

II
(ii)

I
(iii)

III
(iv)

IV

Question 7

7.

Which of the following relations is a function
f

:

A

→

B
,

where A =
{l,i,g,o,m,n}
and B =
{g,n,m,d,e}
?

(i)

{(o,g),(m,d),(i,g),(l,e),(n,e),(g,d)}
(ii)

{}
(iii)

{(o,g),(m,d),(i,g),(n,e),(g,d)}
(iv)

{(o,g),(m,d),(l,e),(n,e),(g,d),(g,i)}
(v)

{(o,g),(m,d),(i,g),(l,e),(n,e),(g,d),(g,i)}

Question 8

8.

Which of the following relations does not represent a function
f

:

A

→

B
,

where A =
{j,e,m,k}
and B =
{i,b,l,a,n,g}
?

(i)

{(k,i),(m,i),(e,g),(j,g)}
(ii)

{(e,b),(k,g),(m,n),(j,n)}
(iii)

{(j,l),(k,i),(k,l),(e,l)}
(iv)

{(e,g),(j,i),(m,i),(k,g)}
(v)

{(e,i),(k,n),(m,a),(j,g)}

Assignment Key