A library has \( n \) different books and has \( p \) copies of each of the book. The number of ....

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A library has \( n \) different books and has \( p \) copies of
\( \mathrm{P} \)
each of the book. The number of ways of selecting one or more books from the library is
(1) \( n^{p} \)
(2) \( p^{n} \)
(3) \( (n+1)^{p}-1 \)
(4) \( (p+1)^{n}-1 \)



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