SOLUTION: How many ways can you line up 7 books on a shelf?
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Question 1190723
:
How many ways can you line up 7 books on a shelf?
Answer by
ikleyn(52776)
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In 7! = 7*6*5*4*3*2*1 = 5040 different ways.
ANSWER
Solved.
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This problem is on PERMUTATIONS.
On Permutations, see introductory lessons
-
Introduction to Permutations
-
PROOF of the formula on the number of Permutations
-
Simple and simplest problems on permutations
in this site.
Also, you have this free of charge online textbook in ALGEBRA-II in this site
-
ALGEBRA-II - YOUR ONLINE TEXTBOOK
.
The referred lessons are the part of this online textbook under the topic "
Combinatorics: Combinations and permutations
".
Save the link to this textbook together with its description
Free of charge online textbook in ALGEBRA-II
https://www.algebra.com/algebra/homework/complex/ALGEBRA-II-YOUR-ONLINE-TEXTBOOK.lesson
into your archive and use when it is needed.