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In how many ways can 7 children join hands to form a circle if they all face inward? In how many of these cases does
In how many ways can 7 children join hands to form a circle if they all face inward? In how many of these cases does child A jion hands with special friends B and C?
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Answer is 71 654321 720 Why Imagine a ring as empty slots Now the first pick i...
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Discrete and Combinatorial Mathematics An Applied Introduction
Authors: Ralph P. Grimaldi
5th edition
201726343, 978-0201726343
