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

(i)

{(3,4),(6,7),(10,7)}
(ii)

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

{}
(iv)

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

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

Question 2

2.

Which of the following relations
R

:

A

→

B
represent a function,

given A =
{1,10}
and B =
{9,5}
?

(i)

I
(ii)

II
(iii)

IV
(iv)

III

Question 3

3.

Which of the following does not represent a function
f

:

A

→

B
,

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

(i)

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

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

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

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

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

Question 4

4.

Which of the following does not represent a function
f

:

A

→

B
,

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

(i)

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

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

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

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

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

Question 5

5.

Which of the following does not represent a function
f

:

A

→

B
,

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

(i)

IV
(ii)

III
(iii)

I
(iv)

II

Question 6

6.

Which of the following does not represent a function
f

:

A

→

B
,

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

(i)

IV
(ii)

III
(iii)

I
(iv)

II

Question 7

7.

Which of the following relations is a function
f

:

A

→

B
,

where A =
{j,m,o,a}
and B =
{n,f,i,o,a}
?

(i)

{(a,n),(j,i),(o,n)}
(ii)

{(a,n),(j,i),(m,f),(o,n)}
(iii)

{}
(iv)

{(a,n),(m,f),(o,n),(i,j)}
(v)

{(a,n),(j,i),(m,f),(o,n),(i,j)}

Question 8

8.

Which of the following relations does not represent a function
f

:

A

→

B
,

where A =
{b,n,l,h,c}
and B =
{o,k,d,e}
?

(i)

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

{(n,d),(c,o),(h,e),(b,e),(l,o)}
(iii)

{(h,k),(c,e),(n,k),(b,e),(l,o)}
(iv)

{(b,e),(c,e),(h,d),(l,d),(n,e)}
(v)

{(l,d),(h,d),(c,o),(n,d),(b,o)}

Assignment Key