1.

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 Q of A is again chosen, the number of ways of choosing so that `(P cup Q)` is a proper subset of A, isA. `.^(2n)C_(n)`B. `4^(n)`C. `3^(n)`D. None of these

Answer» Correct Answer - A


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