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

(i)

{(1,7),(8,10),(7,3),(10,7),(10,8)}
(ii)

{(1,7),(8,10),(10,7)}
(iii)

{(1,7),(7,3),(10,7),(10,8)}
(iv)

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

{(1,7),(8,10),(7,3),(10,7)}

Question 2

2.

Which of the following relations
R

:

A

→

B
represent a function,

given A =
{6,7}
and B =
{10,3}
?

(i)

III
(ii)

IV
(iii)

II
(iv)

I

Question 3

3.

Which of the following does not represent a function
f

:

A

→

B
,

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

(i)

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

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

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

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

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

Question 4

4.

Which of the following does not represent a function
f

:

A

→

B
,

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

(i)

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

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

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

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

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

Question 5

5.

Which of the following does not represent a function
f

:

A

→

B
,

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

(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 =
{6,10,3,7}
and B =
{8,9,2}
?

(i)

II
(ii)

IV
(iii)

III
(iv)

I

Question 7

7.

Which of the following relations is a function
f

:

A

→

B
,

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

(i)

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

{}
(iii)

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

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

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

Question 8

8.

Which of the following relations does not represent a function
f

:

A

→

B
,

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

(i)

{(c,j),(g,f),(o,f),(a,b),(e,b),(m,b)}
(ii)

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

{(e,b),(g,k),(m,i),(o,b),(e,j),(a,i)}
(iv)

{(a,f),(o,i),(m,f),(c,i),(g,i),(e,f)}
(v)

{(e,k),(c,k),(a,b),(o,i),(m,j),(g,f)}

Assignment Key