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[SOLVED] Set of n+1 integers from 2n

 
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Feb16-08, 05:39 PM   #1
 

[SOLVED] Set of n+1 integers from 2n


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Feb16-08, 07:48 PM   #2
 
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Classical pigeonhole argument. Write the set {1,2,...,2n} as a union of nice subsets, like those of the form {2k, 4k, 6k, ...} where k is an odd integer in {1,2,...,2n}. To apply the pigeonhole principle, we want these subsets to be disjoint. Can you find a way to do this?
 
Feb16-08, 10:20 PM   #3
 
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