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 =
{7,3,2,8,4}
and B =
{5,2,10,9,1,7}
?
(i)
{(7,9),(3,2),(8,9),(4,7)}
(ii)
{(7,9),(2,2),(8,9),(4,7),(2,3)}
(iii)
{(7,9),(3,2),(8,9),(4,7),(3,1)}
(iv)
{(7,9),(3,2),(2,2),(8,9),(4,7),(2,3)}
(v)
{(7,9),(3,2),(2,2),(8,9),(4,7)}
Question
2
2.
Which of the following relations
R
:
A
→
B
represent a function,
given A =
{1,10,9}
and B =
{5,7,4,2}
?
(i)
IV
(ii)
III
(iii)
I
(iv)
II
Question
3
3.
Which of the following does not represent a function
f
:
A
→
B
,
where A =
{4,2,10,7}
and B =
{3,5,8,1}
?
(i)
{(10,1),(4,8),(7,5),(2,5)}
(ii)
{(2,8),(4,3),(10,8),(4,1)}
(iii)
{(4,3),(10,3),(2,8),(7,1)}
(iv)
{(10,5),(4,3),(7,1),(2,1)}
(v)
{(2,5),(7,1),(4,1),(10,3)}
Question
4
4.
Which of the following does not represent a function
f
:
A
→
B
,
where A =
{6,8,5,3,9}
and B =
{2,4,1,7,10}
?
(i)
{(8,1),(9,10),(3,7),(5,1),(6,4)}
(ii)
{(9,4),(6,10),(8,10),(3,2),(5,10)}
(iii)
{(3,7),(6,4),(5,10),(9,7)}
(iv)
{(5,4),(9,10),(3,7),(8,2),(6,4)}
(v)
{(6,4),(9,2),(5,7),(8,7),(3,2)}
Question
5
5.
Which of the following does not represent a function
f
:
A
→
B
,
where A =
{9,1,6,4}
and B =
{7,5,10}
?
(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 =
{5,8,3}
and B =
{9,7,1}
?
(i)
IV
(ii)
III
(iii)
I
(iv)
II
Question
7
7.
Which of the following relations is a function
f
:
A
→
B
,
where A =
{f,k,c,b,j,l}
and B =
{o,m,l,c}
?
(i)
{(f,m),(j,c),(l,l),(b,m),(k,c),(c,m)}
(ii)
{}
(iii)
{(f,m),(j,c),(l,l),(k,c),(c,m)}
Question
8
8.
Which of the following relations does not represent a function
f
:
A
→
B
,
where A =
{d,j,m,h}
and B =
{b,l,n,e,a}
?
(i)
{(m,e),(j,a),(d,e),(h,a)}
(ii)
{(d,l),(m,e),(h,n),(d,e)}
(iii)
{(j,e),(h,b),(d,a),(m,a)}
(iv)
{(d,e),(j,n),(m,b),(h,l)}
(v)
{(j,l),(m,n),(h,n),(d,l)}
Assignment Key
1) (v)
2) (iii)
3) (ii)
4) (iii)
5) (iii)
6) (i)
7) (i)
8) (ii)
