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

A is a set containing n elements. A subset P of A is chosen. The set A is reconstructed by replacing the elements of P. A subset of A is again chosen.
i) The number of ways of choosing P and Q so that `PcapQ=phi` is

A

`2^(n)`

B

`2^(2n)`

C

`3^(n)`

D

`3^(2n)`

Text Solution

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The correct Answer is:
C
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