A library has n different books and has p copies of each of the book. The number of ways of selecting two or more books from the library is:

There are 'n' different books and 'p' copies of each. The number of ways in which a selection can be made from them is

There are n books having p copies of each . The number of ways in which a selection can be made from them is :

There are n different books and p copies of each in a library. Find the number of ways in which one or more than one books can be selected.

In a library, there are 6 copies of one book, 4 copies each of two different books, 5 copies each of three different books and 3 copies each of two different books. Find the number of ways of arranging all these books in a shelf in a single row.

A book store has m copies each of n different books. Find the number of ways of arranging these books in a shelf.

There are k different books and I copies of each in a college library. The number of ways in which a student can make a selection of one or more books is