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A set A has n elements. A subset P of A ...

A set A has n elements. A subset P of A is selected at random. Returning the elements of P, the set A is formed again and then a subset Q is selected from it. Find the probability that P and Q have no common element.

A

3667

B

421

C

2141

D

1793

Text Solution

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The correct Answer is:
A
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