isaiahc24 isaiahc24

26-07-2017
Mathematics

contestada

How many ways can a librarian arrange 15 books on a top shelf if she has 20 books from which to pick?

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konrad509 konrad509

26-07-2017

[tex]20\cdot19\cdot\ldots\cdot7\cdot6=20,274,183,401,472,000 [/tex]

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alyssapaige130 alyssapaige130

03-03-2020

Answer: 20!/5!

Step-by-step explanation:

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