1.

A is a set containing 'n' elements . A subset P of A is chosen at random . The set A is reconstructed by replacing the elements of the subset of P, a subset Q of A is again chosen at random. Find the probability that (i) PnnQ=phi (ii) PuuQ=A (iii) PuuQ=A and PnnQ=phi (iv) Q is subset of P

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Answer :(i) `((3)/(4))^(N)`
(ii) `((3)/(4))^(n)`
(iii) `((1)/(2))^(n)`


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