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

(i)

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

{}
(iii)

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

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

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

Question 2

2.

Which of the following relations
R

:

A

→

B
represent a function,

given A =
{3,5,7}
and B =
{8,1}
?

(i)

II
(ii)

I
(iii)

III
(iv)

IV

Question 3

3.

Which of the following does not represent a function
f

:

A

→

B
,

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

(i)

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

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

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

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

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

Question 4

4.

Which of the following does not represent a function
f

:

A

→

B
,

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

(i)

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

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

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

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

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

Question 5

5.

Which of the following does not represent a function
f

:

A

→

B
,

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

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

(i)

I
(ii)

IV
(iii)

III
(iv)

II

Question 7

7.

Which of the following relations is a function
f

:

A

→

B
,

where A =
{f,b,k,j,d,o}
and B =
{f,a,i,h,l,d}
?

(i)

{(o,l),(f,f),(k,d),(b,a),(d,f)}
(ii)

{}
(iii)

{(o,l),(f,f),(k,d),(j,d),(b,a),(d,f)}
(iv)

{(o,l),(f,f),(k,d),(j,d),(b,a),(d,f),(d,k)}
(v)

{(o,l),(f,f),(j,d),(b,a),(d,f),(d,k)}

Question 8

8.

Which of the following relations does not represent a function
f

:

A

→

B
,

where A =
{d,m,h,g,k}
and B =
{l,e,c,i}
?

(i)

{(h,c),(g,c),(m,c),(k,c),(d,e)}
(ii)

{(d,l),(g,l),(m,l),(k,i),(h,c)}
(iii)

{(g,l),(d,i),(h,c),(m,l),(k,c)}
(iv)

{(g,c),(d,c),(k,e),(m,c),(h,c)}
(v)

{(g,c),(m,e),(h,i),(g,i),(h,l)}

Assignment Key