Difference between revisions of "2006 AIME A Problems/Problem 4"
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== See also == | == See also == | ||
*[[2006 AIME II Problems]] | *[[2006 AIME II Problems]] | ||
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+ | [[Category:Intermediate Combinatorics Problems]] |
Revision as of 09:35, 16 July 2006
Problem
Let be a permutation of for which
An example of such a permutation is Find the number of such permutations.