A shelf contain 20 different books of which 4 are in single volume and the others form sets of 8,5 and 3 volumes respectively. Number of ways in which the books may be arranged on the shelf, if the volume of each set are together and in their due order

A shelf contains 20 books of which 4 are single volume and the other form sets of 8,5, and 3 volumes.Find the number of ways in which the books (i)may be arranged on the shelf so that (ii) volumes of each set will not be separated.(iii) volumes of each set remain in their due order.

A shelf contains 20 books of which 4 are single volume and the other form sets of 8, 5, and 3 volumes. Find the number of ways in which the books (i)may be arranged on the shelf so that (ii)volumes of each set will not be separated. (iii)volumes of each set remain in their due order.

A shelf contains 20 books of which 4 are single volume and the other form sets of 8, 5, and 3 volumes. Find the number of ways in which the books may be arranged on the shelf so that volumes of each set will not be separated. volumes of each set remain in their due order.

A shelf contains 20 books of which 4 are single volume and the other form sets of 8, 5, and 3 volumes. Find the number of ways in which the books may be arranged on the shelf so that volumes of each set will not be separated. (ii)volumes of each set remain in their due order.

Find the number of ways in which 5 different books can be arranged on a shelf.

The number of ways in which n books can be arranged on a shelf so that two particular books are not together is

Number of ways in which 15 different books can be arraged on a shelf so that two particular books shall not be together is

Number of ways in which 15 different books can be arraged on a shelf so that two particular books shall not be together is