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JEEMAIN-2015
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Q)
Let X be a set containing 10 elements and
P
(
X
)
be its power set. If A and B are picked up at random from
P
(
X
)
, with replacement , then the probability that A and B have equal number of elements, is :
20
C
10
2
10
(
2
10
−
1
)
2
20
(
2
10
−
1
)
2
10
20
C
10
2
20
Share
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