2009 UNCO Math Contest II Problems/Problem 10
Problem
Let . Determine the number of subsets
of
such that
contains at least two
elements and such that no two elements of
differ by
when
(a)
(b)
(c) generalize for any .
Let . Determine the number of subsets
of
such that
contains at least two
elements and such that no two elements of
differ by
when
(a)
(b)
(c) generalize for any .
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