Call a set of integers spacy if it contains no more than one out of any three consecutive integers. How many subsets of {1,2,3,4,.....,12} are spacy? Could someone please take a look at my attached work Vicky.
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Originally Posted by Vicky1997 Call a set of integers spacy if it contains no more than one out of any three consecutive integers. How many subsets of {1,2,3,4,.....,12} are spacy? Could someone please take a look at my attached work Vicky. 2007 AMC 12A Problems/Problem 25 - AoPSWiki
Thank you!!!!!!
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