Ask your own question, for FREE!
Mathematics 7 Online
OpenStudy (anonymous):

how many ways can you stack 77 books into equal piles?

OpenStudy (anonymous):

the prime factors of 77 are 11 and 7. so you can either have 7 piles of 11 books or 11 piles of 7 books

OpenStudy (anonymous):

5929

OpenStudy (anonymous):

Thank you:)

OpenStudy (anonymous):

also in this case 1 is a factor...so 77 piles of 1 book

OpenStudy (anonymous):

but someone told me 5929?

OpenStudy (anonymous):

where do u get that from?

OpenStudy (anonymous):

5259 is what you get from the first google result, but it doesn't make sense

OpenStudy (anonymous):

how many factors does 77 have? 1, 7, and 11. therefore there are 3 ways

OpenStudy (anonymous):

it doesnt..so thats why i was asking.. Thank u again

OpenStudy (anonymous):

wait where did u get the 11? from

OpenStudy (anonymous):

when u multiply 7 and 11 it equals 77..? is that y

OpenStudy (anonymous):

yes

Directrix (directrix):

7 piles of 11 books per pile ----------------------- Each stack of 11 books can be arranged in 11! ways and there are 7 stacks. That gives 7 (11!) ways to arrange the 77 books in seven stacks of 11 books each. 11 piles of 7 books ----------------- Each stack of 7 books can be arranged in 7! ways and there are 11 stacks. That gives 11(7!) ways to arrange the 77 book in eleven stacks of 7 books each. So, the answer to the original question is [7* (11!) + 11* (7!)] ways. The total is 279, 473, 040 ways.

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!