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2003 Turkey Junior National Olympiad
3
Turkey Junior Olympiad 2003, Part II - P3
Turkey Junior Olympiad 2003, Part II - P3
Source:
January 20, 2013
Problem Statement
How many subsets of
{
1
,
2
,
3
,
4
,
5
,
6
,
7
,
8
,
9
,
10
,
11
}
\{1,2,3,4,5,6,7,8,9,10,11\}
{
1
,
2
,
3
,
4
,
5
,
6
,
7
,
8
,
9
,
10
,
11
}
contain no two consequtive numbers?
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