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JEEMAIN and NEET
>>
Mathematics
>>
Class11
>>
Relations and Functions
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Q)
If
S
is a set having 10 elements in it and
A
is a relation in
S
defined as
A
=
{
(
x
,
y
)
, where
x
,
y
∈
S
and
x
≠
y
.
}
, then no. of elements in
A
is
45
50
90
100
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