Hi, Previously Posted

eight different books 8! total ways of arranging on shelf

thinking OF A 'PAIR' AS ONE UNIT

P(beside each other) = 7!/8!

P(not be together) = 1 - P(together) = 1- 7!/8! 

RELATED QUESTIONS

if eight different books are arranged at random in a shelf, what is the probability that... (answered by swincher4391)

If eight different books are arranged at random in a shelf, what is the probability that... (answered by ewatrrr)

On a shelf there are four Mathematics books and eight English books. How many ways can... (answered by Edwin McCravy)

An eight-volume set of reference books is kept on a shelf. The books are used frequently... (answered by ikleyn)

A child knocked all of the carefully arranged books off a shelf, and then he put them... (answered by Alan3354)

Ten different books are to be arranged on a shelf. Two of the books are by E. Smith,... (answered by scott8148)

In how many ways can 4 different Math books, 5 different History books, and 2 different... (answered by Boreal)

In how many ways can 4 different Math books, 5 different History books, and 2 different... (answered by greenestamps)

If 3 books are picked at random from a shelf containing
5 novels, 3 books of poems, and... (answered by ngahoro)