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

(i)

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

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

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

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

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

Question 2

2.

Which of the following relations
R

:

A

→

B
represent a function,

given A =
{1,7}
and B =
{6,3}
?

(i)

III
(ii)

II
(iii)

IV
(iv)

I

Question 3

3.

Which of the following does not represent a function
f

:

A

→

B
,

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

(i)

{(1,9),(2,5),(8,7),(10,5)}
(ii)

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

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

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

{(10,7),(2,7),(8,5),(2,9)}

Question 4

4.

Which of the following does not represent a function
f

:

A

→

B
,

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

(i)

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

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

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

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

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

Question 5

5.

Which of the following does not represent a function
f

:

A

→

B
,

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

(i)

I
(ii)

IV
(iii)

III
(iv)

II

Question 6

6.

Which of the following does not represent a function
f

:

A

→

B
,

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

(i)

II
(ii)

IV
(iii)

III
(iv)

I

Question 7

7.

Which of the following relations is a function
f

:

A

→

B
,

where A =
{g,f,h,m}
and B =
{a,d,g,f}
?

(i)

{(f,f),(m,d),(g,f)}
(ii)

{(f,f),(m,d),(h,f),(g,f)}
(iii)

{}
(iv)

{(f,f),(m,d),(h,f),(g,f),(d,m)}
(v)

{(f,f),(h,f),(g,f),(d,m)}

Question 8

8.

Which of the following relations does not represent a function
f

:

A

→

B
,

where A =
{g,c,d,b,a}
and B =
{m,o,f,l,e,i}
?

(i)

{(c,o),(a,o),(b,l),(d,i),(g,f)}
(ii)

{(d,o),(g,i),(b,m),(a,e),(c,e)}
(iii)

{(c,o),(b,m),(g,i),(a,l),(c,i)}
(iv)

{(a,i),(b,l),(g,m),(d,o),(c,m)}
(v)

{(a,l),(c,f),(d,i),(b,i),(g,f)}

Assignment Key