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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» (ii) `((3)/(4))^(n)` (iii) `((1)/(2))^(n)` |
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