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AP ICET 2016 Paper
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© examsnet.com
Question : 121
Total: 200
If A is a set such that
n
(
A
)
=
5
, then the number of symmetric relations that can be defined on A is
2
5
2
10
2
15
2
20
Validate
Solution:
If a set A has p elements i.e; n(A) = p, then the number of symmetric relations defined from A to A is given by
2
p
(
p
+
1
)
2
Given : p = 5
∴ Required no. of relations
=
2
5
×
6
2
=
2
15
© examsnet.com
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