0
Assuming that each of the nine books is unique, that there are only nine positions open on the given shelf, and that each book can fit in each position, the answer is 9! (nine factorial) which is equal to 362,880.
If the nine books are not all unique (i.e. there are two of the same book), the number should decrease taking into effect that reversing the positions of the identical books makes no overall change.
If there is one additional position, the number should increase to 10! or 3,628,800. If there is more than one additional position, the number will still increase, but not to 11! or 12! since both open spaces are reversible just like the identical books.
Wiki User
∙ 11y ago
Add your answer:
Earn +20 pts
How many ways can 8 books be arranged on a shelf such that books on biology history and programming are never together?
The answer depends on how many books on each subject there are.
How many ways can 9 books be arranged on a shelf if there is only room for 5 of the books?
9 x 8 x 7 x 6 x 5
How many different ways can five books be arranged on a shelf?
The number of permutations of five things taken five at a time is five factorial, or 120.
How many Ways can you arrange 2 of 6 books on a shelf from left to right?
30 ways.
How many different ways can you choose 5 books from a shelf containing 12 books?
792 different groups of 5 books, in 95,040 different sequences.
How many ways can seven books be arranged on a shelf if one of the books is an algebra text and it must be in the center?
it depends on the shelf of course
How many ways can six different books be arranged on a shelf it one of the books is a novel that must be on an end?
There are 2*5! = 240 ways.
How many ways can 8 books be arranged on a shelf such that books on biology history and programming are never together?
The answer depends on how many books on each subject there are.
How many different ways can 15 books be arranged vertically side by side on a shelf?
The number of ways that 15 books can be arranged on a shelf is the same as the number of permutations of 15 things taken 15 at a time. This is 15 factorial, or 15!, and is 1,307,674,368,000.
How many ways can 9 books be arranged on a shelf if there is only room for 5 of the books?
9 x 8 x 7 x 6 x 5
There are Five books on a shelf. How many different ways to arrange the books?
120. You do 5*4*3*2*1=120. you multiply the number that you are given for example how many times can books 3 be arranged on a shelf you multiply 3*2*1=6 that is your answer
How many different ways can 7 diffrentcandles be arranged on a shelf?
5040
How many different ways can 8 notebooks be arranged on a shelf?
5
How many different ways can five books be arranged on a shelf?
The number of permutations of five things taken five at a time is five factorial, or 120.
How many different ways can 6 books be arranged on one shelf?
6 x 5 x 4 x 3 x 2 x 1 = 720 ways
In how many different ways can 6 books be arranged on a shelf?
6! = 1 x 2 x 3 x 4 x 5 x 6.
How many different ways can 7 things be arranged on a shelf?
7 factorial, or 5,040.
