There are 3 copies each of 4 different books. Find the number of ways of arranging them on a shelf.

There are p copies each of n different books. Find the number of ways in which a nonempty selection can be made from them.

There are p copies each of n different books. Find the number of ways in which a nonempty selection can be made from them.

There are p copies each of n different subjects. Find the number of ways in which a nonempty selection can be made from them. Also find the number of ways in which at least one copy of each subject is selected.

There are three copies each of 4 different books. In how many ways can they be arranged in a shelf?

There are three copies each of four different books. The number of ways in which they can be arranged in a shelf is. a. (12 !)/((3!)^4) b. (12 !)/((4!)^3) c. (21 !)/((3!)^4 4!) d. (12 !)/((4!)^3 3!)

There are m copies each ofn different books in a university library. The number of ways in which one or more than one book can be selected is

A shopkeeper has 11 copies each of nine different books, then the number of ways in which atleast one book can be selected is

There are n distinct white and n distinct black ball. If the number of ways of arranging them in a row so that neighbouring balls are of different colors is 1152, then value of n is _________.

There are 10 different books in a shelf. The number of ways in which three books can be selected so that exactly two of them are consecutive is

There are n different books each having m copies . If the total number of ways of making a selection from them is 255 and m-n+1=0 then distance of point (m,n) from the origin (A) 3 (B) 4 (C) 5 (D) none of these