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A is a set containing n elements . A sub...

A is a set containing n elements . A subet P of
A is chosen at random. The set A is reconstructed by replacing the
elements of P.A subet Q is again chosen at random. The number of
ways of selecting P and Q, is .

A

`2^(n)`

B

`.^(2n)C_(n-1)`

C

`.^(2n)C_(n)`

D

`(2^(n))^(2)`

Text Solution

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The correct Answer is:
A
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