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JEEMAIN and NEET
>>
Mathematics
>>
Class11
>>
Permutations and Combinations
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Q)
S
=
{
1
,
2
,
3..............12
}
A
,
B
,
C
are disjoint equivalent subsets of
S
so that
A
∪
B
∪
C
=
S
. How many such sets
A
,
B
,
C
can be formed?
(
A
)
12
C
4
×
8
C
4
×
4
C
4
(
B
)
12
C
4
×
12
C
4
×
12
C
4
(
C
)
12
P
4
×
8
P
4
×
4
P
4
(
D
)
64
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