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Let's count (Posted on 2010-05-16) Difficulty: 3 of 5
How many subsets of (1; 2; 3; ... 14) have 15 as the sum of their largest and smallest elements in the subset?

See The Solution Submitted by Ady TZIDON    
Rating: 2.5000 (2 votes)

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  Subject Author Date
Some Thoughtsre: solution (spoiler)- decimal spoilerAdy TZIDON2010-05-16 13:58:09
Solutionsolution (spoiler)Charlie2010-05-16 12:45:42
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